Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01752c61a1aed62…

MALICIOUS

PDF

49.6 KB Created: 2020-08-20 04:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05fd6d5e7a605a6db55192500f227547 SHA-1: e5511b10a857d8503563cd385d59da57208c45c2 SHA-256: c01752c61a1aed62680cfddb4c5043bd54f9a07dd19caef6ae124c241a52295b
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=android+api+27+notification', which is also flagged as a malicious redirector. The presence of a large PDF link farm suggests an attempt to manipulate search results or distribute malicious content through seemingly legitimate channels.

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.ru/pify?keyword=android+api+27+notification In PDF document text
    • http://sijifelov.gileadlab.net/uploads/1/3/1/3/131379833/xamizefupirit.pdfIn PDF document text
    • http://files.eseofmi.com/uploads/1/3/0/8/130813866/a53dc4e.pdfIn PDF document text
    • http://kimapaxup.bbt-livonia.com/uploads/1/3/2/3/132303354/18d0dca34.pdfIn PDF document text
    • http://files.criticalmassdancecompany.org/uploads/1/3/1/8/131857402/43d3d.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/1/0438/2746/2301/files/psychology_tenth_edition_david_g_myers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/90851522769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/97108369654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/25690507473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/3498/4857/files/davolumogupupaxado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7360/9636/files/berlitz_japanese_phrasebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/faluna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9292/4821/files/nuzizaxasewonafagogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/number_theory_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/basalt_rock_fibre_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5224/3861/files/voxajonifipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.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 8

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_off00007755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7755 5140 bytes
SHA-256: 856ee3bfecea9b9f394208dd6bfb481c0c990e074f97ea32250db64762cfaf75
font_01_sfnt_off000088e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E3 15444 bytes
SHA-256: dc3e5a250505ef3822f2851d25c679dcb89e45dcabf9129e583f6f4a214fb02e

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