Malicious PDF — malware analysis report

Static analysis result for SHA-256 92bb46ec7a3f5b39…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 16:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e105bd5c05fbb85804f822917e0674f8 SHA-1: 87a6257bb0f148b933971355eb83bbcd3257ecad SHA-256: 92bb46ec7a3f5b39fd7dd969f52bc747f25890ae7afc6b8a81cebdd6e4ebb915
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.ru/pify?keyword=arcata+weather+report, is flagged as a malicious redirector. The presence of a large number of external links, many pointing to Shopify domains hosting other PDFs, suggests an attempt to manipulate search engine results or to distribute further malicious content through a chain of redirects. No scripts were extracted, and the document body is heavily obfuscated, but the link farm heuristic is a strong indicator of malicious intent.

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=arcata+weather+report In PDF document text
    • http://files.gearedforgrowth.co.uk/uploads/1/3/1/0/131070689/474e84ac780f2.pdfIn PDF document text
    • http://files.pcmusicinstruction.com/uploads/1/3/1/3/131398504/784381.pdfIn PDF document text
    • http://files.holmesscience.org/uploads/1/3/1/8/131856270/puxugafujewulo-kufupubal-gofaj-fipaluzole.pdfIn PDF document text
    • http://files.brittpixphotography.com/uploads/1/3/0/8/130873945/1677233.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/1/0433/9014/0572/files/aha_guidelines_high_blood_pressure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/anemia_slideshare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3010/9593/files/vuzisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/89591720915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2585/6672/files/android_10_samsung_note_10_verizon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/watch_attack_on_titan_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/farenizozusebalifuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0202/files/zowijexufezuneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/30697155944.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 6

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_off00006bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF1 4892 bytes
SHA-256: 9e51bf23faa04bf88755c78eb9c2efbb3615bf1f676e2a985c0f492dafba3fa4
font_01_sfnt_off00007c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C98 10328 bytes
SHA-256: 429bb97f48ea31bb0b0571a617f3a0419b7c09887fa79194c93459f66fa87bf7

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