Malicious PDF — malware analysis report

Static analysis result for SHA-256 f85828c060e02ec7…

MALICIOUS

PDF

46.0 KB Created: 2020-08-06 22:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69df4dc92214712129fe8f7ccc31b8c7 SHA-1: 970e3ee7c1be1083b3d7d86502dacd902054956d SHA-256: f85828c060e02ec7eb57a9187f078f77150d927c5e3a253abf1488810a8315d8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is the primary attack vector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=electrolysis+of+brine+solution+pdf', suggesting a lure to trick users into clicking. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely to improve search engine ranking for malicious content. 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.cc/pify?keyword=electrolysis+of+brine+solution+pdf In PDF document text
    • http://fajom.bigmikeroadshow.com/uploads/1/3/1/4/131453645/30eea7f.pdfIn PDF document text
    • http://files.ahta.info/uploads/1/3/1/3/131381003/rekogin.pdfIn PDF document text
    • http://files.laughingnature.com/uploads/1/3/1/8/131856173/ae0db62d9187.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/1/0433/9105/8083/files/tractor_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2235/9447/files/engineering_economic_analysis_13th_edition_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/19170905661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/47496042841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/lukaxumumawidojaveline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/88668795864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/kikimoxaweke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/sopilerovejolizamag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4388/0103/files/17604570903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/79452290451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/gowapagivawareseretuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/5217585016.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
🗂 Part of campaign: ahta.info 3 samples

Related samples 5

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_off0000748e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748E 5136 bytes
SHA-256: 2d2e9de48d7fd309c8294cadacb59813962e22c2f34f7901bc957c00bd5adf76
font_01_sfnt_off0000861f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861F 10936 bytes
SHA-256: bf03211a1843f1d594965fbc1694f73ff2ad883747b4717427b0784b45b79667

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