Malicious PDF — malware analysis report

Static analysis result for SHA-256 a621502391edd011…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 07:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4966fee4f06d79e7e9d52a2e643d9e6e SHA-1: 2d056115a0a668649fa6979cf7513c4bea40d85c SHA-256: a621502391edd011945b28effc948d5ad4b3f8fee98b4b1931986399c022b14f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.com`. This indicates a phishing or scam attempt, likely to lead the user to malicious content. The document body itself is heavily obfuscated and contains the malicious URL, further supporting this conclusion.

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.com/pify?keyword=plant+systematics+pdf+simpson In PDF document text
    • http://files.depedkabankalancity.com/uploads/1/3/1/3/131379054/lafusovab.pdfIn PDF document text
    • http://xaxedaki.franklin-marketing.com/uploads/1/3/0/8/130874523/b77b377012815e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8889/9224/files/adobe_spark_tutorial_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/7362304519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/archaeology_of_knowledge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/blood_of_a_stranger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9938/1146/files/introduction_to_ancient_greek_philosophy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8496/2199/files/mcq_on_glycogen_metabolism_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/1767173669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/comunicao_assertiva_livro.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 5

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_off000064df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DF 5096 bytes
SHA-256: 87f78b49cc671321fab19ade42ce935530b2d072b417e419a4067a527ae358e4
font_01_sfnt_off00007622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 10108 bytes
SHA-256: 72da06d90fc42dec1027d49c58efae15a5fe3bb1bf6841af7797209425782798
font_02_sfnt_off000098ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98AB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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