Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27e4abebeb32ed4…

MALICIOUS

PDF

40.8 KB Created: 2020-08-17 02:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64aea04538475470add2270f3617196a SHA-1: cbf01728b49b311db58c37ff4dcc6714ef16be18 SHA-256: a27e4abebeb32ed417c12e9b863afd7d3bda4048b0891f2293a20f09db1d3ecd
194 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=nutritional+information+skimmed+milk+powder. While the document body contains garbled text, the presence of numerous links, including one pointing to known malicious infrastructure, strongly indicates a malicious intent to redirect users. No scripts were extracted from this sample.

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=nutritional+information+skimmed+milk+powder In PDF document text
    • http://pepom.margaretglaeser.com/uploads/1/3/0/7/130740444/af3b304cb5.pdfIn PDF document text
    • http://falusurim.lifeastimothy.com/uploads/1/3/1/6/131636725/mexozelaw.pdfIn PDF document text
    • http://files.takeaway.com.sg/uploads/1/3/1/6/131606268/rotaluvekifaku.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/1/0432/7384/6952/files/10810017142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1939/3448/files/heograpikal_na_varayti_ng_wika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/designing_data_intensive_applications_kleppmann_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0077/4308/files/78535474761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/bipenebidube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1458/5509/files/catholic_cursive_handwriting_worksheets_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/pdf._js_blob_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/91956221233.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 3

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_off0000566f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x566F 5312 bytes
SHA-256: cb485e15a187bf9da9bff419c60fcc280430c48d6c312c24be844f8d1fe0a7cd
font_01_sfnt_off00006884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6884 14892 bytes
SHA-256: 33271e9ef6525ec57fbda1157489d11bf7a7d4e568f874e6f67509fe3e9c5fb3

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