Malicious PDF — malware analysis report

Static analysis result for SHA-256 06567a62b5c88b8b…

MALICIOUS

PDF

80.1 KB Created: 2020-11-20 14:05:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 116794eed34027179d36dc7c3874fe97 SHA-1: dd04e7581482a6041ac5f0e9abf2704def9ba406 SHA-256: 06567a62b5c88b8b9eeff92d0e30fa008bf9d2408c70e0ba5d38f6dca7f5df5b
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://traffine.ru/strik?utm_term=drumbeat+for+the+mending PDF link annotation
    • https://fafofezun.weebly.com/uploads/1/3/4/3/134338513/nakipigakazus-xufozafi-gafigotuk-fuxojo.pdfIn PDF document text
    • https://liwifaxuje.weebly.com/uploads/1/3/0/8/130874244/fovozitagozu.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/somamere/vitokovaxapebekozudux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c117b8-a657-4718-80b3-db48d7c86e31/gatevitizeki.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/vovinese.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/vofiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4239b591-c5af-484a-80d4-573b452ec7d2/toro_wheelhorse_520h_manuals.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/jitosulabejobetape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9639e6ed-4ac0-425f-876e-4f07c9c4653b/best_self_be_you_only_better_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a412a5af-8d58-4eff-8395-a619f8c5345d/navibozususozebavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f092ee-0dc8-46a8-9ea5-be7b0e02af6e/the_legend_of_the_candy_cane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5790928-a469-452b-806d-800f2422128b/legitimate_online_job_yahoo_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/fubozuredakirubori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a13f7e74-951d-42c7-94b0-39977614ac9f/cps_calendar_2019-2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e091ee4-8966-4368-afa5-72832e003591/36056047943.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C2 3396 bytes
SHA-256: 77be13900d68d7be2b1b758a40f192434781feff0d396d0513df965ba6b4e6cc
font_01_sfnt_off0000f3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E3 5252 bytes
SHA-256: 4ebcfe5c1591b4c170f3a5268f4dc8455f583ea1b7204dc269f298ebc5f95c99
font_02_sfnt_off00010590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10590 1724 bytes
SHA-256: c8c75a7a206b7f2ab2cbbf385b95a02ce61201341a37a9a447ebd8da92d4453e
font_03_sfnt_off00010e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2E 10716 bytes
SHA-256: a1bfa89cd72795fde2124d7658545ec20bd2eda5409a2bffdcdcf2e7bfd5a6ba

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