Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ff23f3bd0d4914…

MALICIOUS

PDF

54.5 KB Created: 2020-08-08 15:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57cb1802b99080be87f65b0f82af409d SHA-1: b6b623583b0e338792ecd07657cc401f38b4995f SHA-256: 63ff23f3bd0d491406d7a41dbd57750eb07e0aa257a77ec3a9071abbd84a31b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com), suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the redirector URL and other Shopify links, likely part of a SEO-based phishing campaign 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.com/pify?keyword=knowledge+areas+in+project+management+pdf In PDF document text
    • http://files.deafcan.org/uploads/1/3/0/8/130874257/xevowen.pdfIn PDF document text
    • http://files.outreachadvocates.org/uploads/1/3/2/8/132814996/4d259c6a528e29c.pdfIn PDF document text
    • http://files.jeffdentonfit.com/uploads/1/3/1/4/131437318/zovujudilererogel.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/1/0436/9560/3862/files/bodybuilding_program_for_mass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/argelander_els_interj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/bubusarebowasonipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0712/3357/files/65972337486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/91834550033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vidabuvuwegorowomilamum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4506/0762/files/3ds_game_dumps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/the_road_not_taken_explanation_line_by_line.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2041/8198/files/logarithm_and_antilogarithm_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/lisubisojuvazel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/fabitogagumegana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0134/0319/files/49285745430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5920/7579/files/lotuzubo.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_off00009761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9761 5612 bytes
SHA-256: a55384946f693fec3ea8b7809425ba428231402ac390f94c687940bb2eb37439
font_01_sfnt_off0000aa87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA87 9980 bytes
SHA-256: c7cc0700ced34a7910415ef6bda3af58ae00cf0d8a5d948575a026690165eef2

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