Malicious PDF — malware analysis report

Static analysis result for SHA-256 f123f2b9b2697b07…

MALICIOUS

PDF

44.8 KB Created: 2020-08-04 18:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9124d193c96a4ff5351fbdd3bf06a556 SHA-1: ac909abfbf0e7c586d2c4b7cc13dde667be8809e SHA-256: f123f2b9b2697b0789349660dd0f0fdbcded30ef7d7e61590f9cbda2f6d5c7cd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. Another heuristic flags a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=attestation+assedic+nounou+pdf', which is also listed as a malicious redirector. These findings suggest the primary purpose is to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.cc/pify?keyword=attestation+assedic+nounou+pdf In PDF document text
    • http://files.robertvereecke.org/uploads/1/3/0/7/130739626/tajalexajabifufibo.pdfIn PDF document text
    • http://files.winstonjessicacooper.com/uploads/1/3/1/4/131437484/2555c1b050f44.pdfIn PDF document text
    • http://files.wmiller-rowe.com/uploads/1/3/0/9/130969448/3249333.pdfIn PDF document text
    • http://files.kathrynbellart.co.uk/uploads/1/3/1/4/131407469/b7b8c3923d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1815/7221/files/399422575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/28424060033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/search_within_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/68567189082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5630/7107/files/xibopiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/gebamozatemotevap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9430/9019/files/aapc_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7319/files/rotadabowakazadav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/54346307279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/pawoxidipapitaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0831/7850/files/lexoruwexagewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/75750404763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6901/files/dowifimemofuvusugedem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/zulujuxideluwakepu.pdfIn PDF document text
    • https://www.pole-emploi.fr/accueil/In 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A1 5012 bytes
SHA-256: 720d1251ae051d8345db36f0afcb4b1078fe740a0534dfa6388c6f463ba27697
font_01_sfnt_off000083c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C5 10128 bytes
SHA-256: 6c7a39397216c5a6b04b659091a5777dfb5e8a838e30c7d892ad55490a8c9a87