Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1bc59d4b09fc571…

MALICIOUS

PDF

44.9 KB Created: 2020-08-04 16:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db4c918304991e7b336b08fa29917f79 SHA-1: 98470b234dc1dda4f6e2c2d735ea5b2a8f1bb11a SHA-256: b1bc59d4b09fc571599e99dc34b9ef4597b3935942d2fdaabdbb0d049e95e431
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which is the primary attack vector. The document body text and embedded links suggest a lure related to Canadian citizenship exam questions. The link `https://ttraff.cc/pify?keyword=canadian+citizenship+exam+questions+pdf` is a critical IOC, as it points to known malicious infrastructure. The PDF also contains a link farm, indicating a potential SEO poisoning attempt to drive traffic 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=canadian+citizenship+exam+questions+pdf In PDF document text
    • http://files.asustudentsforlife.com/uploads/1/3/2/3/132303245/vozonubizop.pdfIn PDF document text
    • http://files.manuseva.org/uploads/1/3/1/1/131163856/pefoxogokugemal.pdfIn PDF document text
    • http://files.coloradoinclusivefunders.org/uploads/1/3/1/3/131380083/8254560.pdfIn PDF document text
    • http://files.janeymoffatt.com/uploads/1/3/1/4/131409794/xidexo_zukemitubud.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/1/0437/8427/4069/files/fejag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/9547711675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/86773082953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/33130033832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/46526568706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/1443469330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2457/2835/files/razamepupugukojirasapibef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/tutunodudisazidage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/1522830473.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 7

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_off00007132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 5416 bytes
SHA-256: c941b12c20c8805c694ec42396aea17172e7f1e02fcce8ef3cdb65aaa2f05412
font_01_sfnt_off0000838c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838C 10384 bytes
SHA-256: d2855685f50e9587d2b5069358565493fbe350fb81989dd67b4d064e19fb033d

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