Malicious PDF — malware analysis report

Static analysis result for SHA-256 059d5bd1ead1eb3e…

MALICIOUS

PDF

95.0 KB Created: 2021-03-24 03:49:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 02195554d96b3aa9cbc587f38698d9b0 SHA-1: 17f0c966ed8a3730a0551aa2561b0a984bc272a2 SHA-256: 059d5bd1ead1eb3e3c293f6d02a11485c224e21a3e0d9d3578ec7dc7525d7707
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. The document contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO spam operation. The primary URL, 'https://gimoguvi.ru/strik?utm_term=measure+and+integration+theory+heinz+bauer+pdf', is likely the intended destination for users, possibly leading to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gimoguvi.ru/strik?utm_term=measure+and+integration+theory+heinz+bauer+pdf PDF link annotation
    • https://cdn.sqhk.co/senuziker/idif5Zb/you_are_god_alone_william_mcdowell_lyrics.pdfIn PDF document text
    • http://itravelgr.com/rancilio_silvia_espresso_machine_repair_kitf5wxr.pdfIn PDF document text
    • http://lafowesezojo.scienceontheweb.net/27114069095.pdfIn PDF document text
    • http://center-about.com/dufaxulw0m3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413120/normal_5fe9c66f221c3.pdfIn PDF document text
    • http://fasad-dom.site/russian_classic_car_simulator_apkpure61xsj.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxaguzifep/ijidRxS/harvard_business_review_managing_yourself.pdfIn PDF document text
    • https://cdn.sqhk.co/pulizojiwim/ffgcjdm/13859595540.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457296/normal_602532fca6ebf.pdfIn PDF document text
    • https://cdn.sqhk.co/fivufotimad/jMJzppy/12004302908.pdfIn PDF document text
    • http://wovoradomumakil.medianewsonline.com/jusametonivimor.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/fkv0Lyf/battleheart_legacy_classes_unlock.pdfIn PDF document text
    • http://energytik.net/85173913895j0ssi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386609/normal_603bacc36d87e.pdfIn PDF document text
    • http://idealica-ordina.site/wnr1000v3_netgear_genieqj0h1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://36535336-4f9e-4c0a-b1ad-3385cb5d4299.filesusr.com/ugd/15ebe2_fdcc416390b847a28e8e82bbb8d1c591.pdf?index=trueIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_774afa497531452fbb2239bb5d6a0edf.pdf?index=trueIn PDF document text
    • http://sazebufaz.atwebpages.com/cameroon_visa_application_form.pdfIn PDF document text
    • https://8dcf3d85-40eb-4350-b789-ae6ac2c46e24.filesusr.com/ugd/21d17a_9ccc6b8c9cda4fc1b732770c3338ea43.pdf?index=trueIn PDF document text
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_7079c166769642e4971e201a821323b0.pdf?index=trueIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_b2e92c2f24454d00bae15a9d61ee8ff5.pdf?index=trueIn PDF document text
    • https://fdb0147f-387d-4908-9c93-1ccdb5bf775f.filesusr.com/ugd/aea2e0_e1242c2b0672490f97108e8c5f35721c.pdf?index=trueIn PDF document text
    • https://4fe85328-8dbf-40e9-afa8-2c8d6ff8a9c8.filesusr.com/ugd/9c0842_f3d1c52093db479ca1776e3da7952638.pdf?index=trueIn PDF document text
    • https://a43ab9c2-5efb-4cee-ac06-b782a0f5e207.filesusr.com/ugd/4826f5_3616d80129514599bbb2d2b9ec7b73b0.pdf?index=trueIn PDF document text
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_c0d63778ce1e4822bd34b79831799a27.pdf?index=trueIn PDF document text
    • https://b7f5b04e-b247-49a4-9dc0-39f0c843ec09.filesusr.com/ugd/b56f86_19a0a53852404038b75646fd1150f511.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10770 3016 bytes
SHA-256: 40f61325ea38c69aee5c534e1f4e8e26b2bdb795d3a69e5563b8b39043039657
font_01_sfnt_off00011225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11225 5452 bytes
SHA-256: e4b6a16bd3413d6508e102267f7d923c745433f66da01009ec1a410b04dd7c19
font_02_sfnt_off000124b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B1 11344 bytes
SHA-256: 2b5c59bb70a330d8504aadd0476283e15bf50f6592f702481351ad908b2e676b
font_03_sfnt_off000149e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149E3 16120 bytes
SHA-256: 006bfe924807e95b2612db487f57eadc51ae213ec1fe6ebf37f0ab4cb536b0f7
font_04_sfnt_off00015ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EBE 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.