Malicious PDF — malware analysis report

Static analysis result for SHA-256 1969c727301a1f09…

MALICIOUS

PDF

84.4 KB Created: 2021-04-11 09:25:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a50252a31c37413f409b7f6d8f48c2e7 SHA-1: 522d1b985aa2bcfe297620cc6bcf15b916722780 SHA-256: 1969c727301a1f094247192237f6bfd2c741dd0bdb9652355444d728422bbc0b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

Heuristics 5

  • 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.
  • 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://dafemum.ru/strik?utm_term=par+quoi+remplacer+le+sel+regenerant+du+lave+vaisselle PDF link annotation
    • https://kimuximufa.weebly.com/uploads/1/3/4/1/134132687/dedunates-tumemuzipu.pdfIn PDF document text
    • http://gadalunapolad.22web.org/dasugufedurumapa.pdfIn PDF document text
    • https://nawuwisenaz.weebly.com/uploads/1/3/5/3/135318134/nekitavinot.pdfIn PDF document text
    • http://warowusavi.mywebcommunity.org/23357290934.pdfIn PDF document text
    • http://bevamifugidujew.scienceontheweb.net/zobaz.pdfIn PDF document text
    • https://rosunitekuw.weebly.com/uploads/1/3/1/3/131384708/rutolax.pdfIn PDF document text
    • https://nitevugumosu.weebly.com/uploads/1/3/4/5/134526644/gibujaxalufonurilos.pdfIn PDF document text
    • https://wivaralizufijol.weebly.com/uploads/1/3/1/4/131483386/7402508.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gekojulog/31017090586.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/chatiw_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25fa9a21-1ff8-4cc4-9db9-7102d3e813d0/58079649407.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/asics_mens_running_tights_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/3d_maker_for_solidworks.pdfIn PDF document text
    • https://c2bc7a71-cb21-434c-84f6-8d2fc09ed56d.filesusr.com/ugd/03ae60_4c148d9ba3484047b1f66a373d301863.pdf?index=trueIn PDF document text
    • http://lupibewexuzu.rf.gd/cell_differentiation_in_plants.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c42ac6b-f0bd-454b-be75-fda44fdc01f6/63591600235.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/computer_books_for_seniors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8ef0da9-d6ad-4c57-88cc-86cf5af657a0/what_is_the_difference_between_description_and_narration.pdfIn PDF document text
    • https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_223497e3c6304dc0a549841d5f0561cf.pdf?index=trueIn PDF document text
    • http://legibevisavu.epizy.com/sap_hana_studio_installation_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960a82e3-57d0-4eca-8167-3293a379ca9f/55136794276.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF194 5580 bytes
SHA-256: 435d85765f4d9e5a3915d7972bf5d1cced23cdfcbe028966cf5267051b3f6c62
font_01_sfnt_off00010473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10473 12524 bytes
SHA-256: d08d29dd07c2a6c499a97a5f4fecaf85caa1237dc12b79482df36aea9a9238de
font_02_sfnt_off00012c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C04 16204 bytes
SHA-256: 31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf

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