Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4c3f863738a1219…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 21:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c532d7a0f75e6f6f9b0581a597280b3c SHA-1: 041ab84bc72bfe8c5b02bf6c690aa0a47f7d1d12 SHA-256: b4c3f863738a12192e7ceace4ada88bb3fe7c2c13da0ffcb7dcc9aaed660d65c
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=abstract+nature+of+mathematics+pdf', suggesting a lure to a malicious site. The presence of numerous PDF links, many hosted on cdn.shopify.com, indicates a link farm designed to distribute malicious content or phish users.

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=abstract+nature+of+mathematics+pdf In PDF document text
    • http://nokumod.erasmuspeak.com/uploads/1/3/1/6/131606349/dawiferije_nilumad.pdfIn PDF document text
    • http://vagefasi.thelongwellfiles.com/uploads/1/3/1/3/131384401/zetiguj_ziraduwuzure_muxexe_gaxefobukivof.pdfIn PDF document text
    • http://files.nuclearwarfare.de/uploads/1/3/2/6/132695601/8713041.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/1/0430/4135/7973/files/19435142549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/jexori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/ziledagasedavimipuzaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/17565100744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2655/4780/files/seventh_day_adventist_fundamental_beliefs_28.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/63414940046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jokesinoximirupabujikupoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9159/1317/files/25727186457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92835403356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/85283849500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/add_blank_page_into.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFE 5492 bytes
SHA-256: 83a635fee34d77bb74a91889e87ff0b9881c4628b31166a4bedf831d1a73db2c
font_01_sfnt_off00006d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6E 10412 bytes
SHA-256: f068974d1f7996c44407e180fb2b5be6ed119d78b50c2a257ab9bf61a930df43

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