Malicious PDF — malware analysis report

Static analysis result for SHA-256 006b2c913412be8e…

MALICIOUS

PDF

81.8 KB Created: 2021-04-03 08:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5ed791e20dfca45ab8eb247a80461849 SHA-1: 5b351c7ed9d3b8b1d72bd47ebdb67f4306120864 SHA-256: 006b2c913412be8e4e5e235db57d045c6ddfc40946a2406ed0591dd3253af0d5
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=nfs+most+wanted+mod+apk+highly+compressed PDF link annotation
    • http://fitit.space/mezuxafovevegudufox2lg9m.pdfIn PDF document text
    • http://dojimifarekajiw.iblogger.org/chorus_from_judas_maccabaeus_piano_sheet_music.pdfIn PDF document text
    • http://rmk4sale.xyz/atlantic_charterb1fqj.pdfIn PDF document text
    • http://kumadogeka.22web.org/lufixazukabe.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/hjCgiif/61133395977.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/Egijjk9/1_oscar_fish_tank_size.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/bhhidDe/bikutidipifepo.pdfIn PDF document text
    • http://scarcebook.com/209671956122r09i.pdfIn PDF document text
    • http://kawonipedo.22web.org/ancient_greece_map_labeled_euboea.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/11jg1gt/22171361437.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://de99934f-f465-4d69-af5e-14f317c0a7c6.filesusr.com/ugd/4fea5c_87e205b9bbf54787905ab02d23d2575b.pdf?index=trueIn PDF document text
    • https://a4758657-6aaa-4003-b0f6-1957e800abfd.filesusr.com/ugd/70c1f8_72aff6ad9f404f2b86a966a24c89e12b.pdf?index=trueIn PDF document text
    • https://29ce6865-365c-47c4-9f0a-635d6f965865.filesusr.com/ugd/0d6b77_f4853947c366498c95d19f3f49c220f3.pdf?index=trueIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_4ceb60afb6164c09b6dd1b1f1fdb14a7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/149a1702-a745-447d-86c5-9d9351d89f11/war_horse_play_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22ddc3ea-eabc-450a-b885-ed0dc140e277/sinetate.pdfIn PDF document text
    • https://587b455d-cc79-4428-8e80-a8b75ce23bca.filesusr.com/ugd/021ec8_da13293fcdf2446db1b459e2be5615ff.pdf?index=trueIn PDF document text
    • http://zufonokimilije.epizy.com/free_drivers_license_template_photoshop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e681e5e6-d12c-40a1-a943-ef295f681023/lolijukonutilokejefeta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca0dc1c6-0785-43a4-825d-9180083c6ff5/18261455876.pdfIn PDF document text
    • https://aabf49e0-5477-4fd2-8456-a986ef8f2a87.filesusr.com/ugd/9e14ca_bb8c7d72e7744847826ff0497839c299.pdf?index=trueIn PDF document text
    • https://a8a2d6b8-6248-42a0-90a4-e25e421c2e59.filesusr.com/ugd/f63f29_d013819ebff641d3ab7d510c1539f224.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/962c3e34-8410-41da-9c8e-555425d278a9/dumanaloken.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE893 5796 bytes
SHA-256: f54bfad01db32289d6fa633f136413cb90ddc8b65db43c3d79c8640b1eb9e737
font_01_sfnt_off0000fc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4D 11096 bytes
SHA-256: 3854142fecc6c190e8f1b67f875e5d7c625591f1eba399fd2be0fc1403104b9d
font_02_sfnt_off00012260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12260 16672 bytes
SHA-256: 3a72711f2ded810199c64acdf99e6fa6a4618a69cabdfcf328904f4e9423f03d