Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3138021004ebdab…

MALICIOUS

PDF

41.1 KB Created: 2020-08-06 23:43:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c24fb5fe646743e216cffed0b506839f SHA-1: 2acc51a9078d2fa60c28e6bc992c65f2e5cb06f8 SHA-256: f3138021004ebdab10c68f8427471b01699f9cbf96c47d1b70fc86011016af7b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to '2020 calendar printable pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious, reinforcing the assessment that it is designed to redirect users to harmful content.

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=2020+calendar+printable+pdf In PDF document text
    • http://files.attheranch.org/uploads/1/3/2/7/132740277/vufikevedin-dirulamopafixoj.pdfIn PDF document text
    • http://milukunew.flawlessskinstudio.com/uploads/1/3/2/6/132681947/lurujolizilafem.pdfIn PDF document text
    • http://files.foxydrummer.com/uploads/1/3/1/4/131407369/6212519.pdfIn PDF document text
    • http://files.coonafit.com/uploads/1/3/0/8/130874035/fd316916e62.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/1/0436/5929/6926/files/sqlite_complete_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/46897623422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1790/4039/files/nuzivivobuxipaveravotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5670/0319/files/phenolic_compounds_in_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/nunokasisilimibupow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/zogivojumageperomelurezeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/gogudekena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/webifevawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/tofilagelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/nizorot.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_off00006377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6377 5288 bytes
SHA-256: d658a4710c688a447123378ad62570133dd689b50c99f7d5b275295e094d9a57
font_01_sfnt_off00007572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7572 10080 bytes
SHA-256: 765402cf58ba2e6cd304d94f9c7c59fc8c9dc35ec291c7e5c5f7a781d46deb6a

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