Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7277a4d611c6883…

MALICIOUS

PDF

34.3 KB Created: 2020-08-02 14:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d79f0cca1ddb13141aa0d252c7f0f86b SHA-1: afe71d2eb5cd409750e57f191d6b4ad56aed4e10 SHA-256: a7277a4d611c68838d1504ebf493b6ae3f836a81c8de16a3c5a998c6be9705d4
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=alliance+and+horde+compendium+pdf'. The document body, though heavily obfuscated, contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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=alliance+and+horde+compendium+pdf In PDF document text
    • http://files.richardsavenuebusinesspark.com/uploads/1/3/0/8/130874175/4449038.pdfIn PDF document text
    • http://files.midcitycarriages.org/uploads/1/3/0/9/130969588/jenagosumakagur_davemekelivobup_surasetevitet.pdfIn PDF document text
    • http://files.vickiseabrook.com/uploads/1/3/0/8/130814788/pawige_lupigunegomozo_sogenegidoke.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/1/0437/1673/9222/files/3791802288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2880/5789/files/82227744598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/xajozafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/3095944893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8303/7860/files/kc_star_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/18240566932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/muxuzej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/39450053982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/581871399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/zawavodagexanupiberegodu.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

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48ED 5204 bytes
SHA-256: 741a1eb9135b0bbef41477c53b3255bc0357aa11cb8095eb945aa73cd6b99385
font_01_sfnt_off00005a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A73 10016 bytes
SHA-256: 7e6d84c22f97a76f599b150dd5e2a049f2b8b41f9358a91398a8d96140bb86d7

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