Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbfc1388696e33be…

MALICIOUS

PDF

42.4 KB Created: 2020-08-18 17:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bd5e2d8a4c6e0bdda7420a78106a261 SHA-1: 4d597d32b215b713362bd6db2d5caf8c06a2b8be SHA-256: bbfc1388696e33be75551e587e352687c11d054b0aef327ed90d2359c60c439c
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, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or redirector strategy to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. 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.com/pify?keyword=polaroid+label+templates In PDF document text
    • http://files.stokesfitness.com/uploads/1/3/1/0/131071082/susezubigikifuxiw.pdfIn PDF document text
    • http://birivu.fateandfutureproductions.com/uploads/1/3/0/7/130775735/2973056.pdfIn PDF document text
    • http://files.stephencollins-painter.com/uploads/1/3/1/3/131398059/b68ba3cbffbde2d.pdfIn PDF document text
    • http://files.travisseaborn.com/uploads/1/3/2/6/132681492/7957007.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/1/0438/8959/0427/files/personal_income_and_expenditure_template_excel_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/rezaxesus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3590/2631/files/39714232166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/turn_of_the_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/kawuxexosebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/medirowowuwafado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/kelupafalifaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/20419049755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/57490163151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/detective_byomkesh_bakshi_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/88295493325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/school_of_the_seers_free.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: cheskasstore.net 3 samples

Related samples 3

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Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D 5248 bytes
SHA-256: 1cb29e1673d898486d4f36c15e7b8d356c889dc065fd31352171bf0807b2e0d8
font_01_sfnt_off00007010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7010 14192 bytes
SHA-256: b148dc87656f2eea9cba2514cfeb217f627109531e0c45c2106372b0172de0f3

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