Malicious PDF — malware analysis report

Static analysis result for SHA-256 b741b5a881e3c3a5…

MALICIOUS

PDF

46.7 KB Created: 2020-08-12 15:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53ac4953f80ab38c9ee96ade4ac26736 SHA-1: 16fa894153162034d0ed7c859973e3a0adcc4bc2 SHA-256: b741b5a881e3c3a5d94a02fe8b9e36a67ed2e8d1d231c4d8c3e4554f32bcb6f3
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the malicious URL and references to other benign-looking PDFs hosted on Shopify, likely to appear legitimate. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the redirection to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=bombastic+words+for+love+pdf In PDF document text
    • http://files.truthministryaz.org/uploads/1/3/1/8/131856040/827979.pdfIn PDF document text
    • http://files.graflix.com/uploads/1/3/2/3/132303388/01215fb899fa18.pdfIn PDF document text
    • http://rakuliji.mywiscofarmstead.com/uploads/1/3/1/4/131452977/d4daf04b1.pdfIn PDF document text
    • http://files.thehivespacechicago.com/uploads/1/3/2/6/132680907/jemoderakowiduj.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/1/0436/2164/6498/files/8841101443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1137/9097/files/always_look_on_the_bright_side_of_life_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/commutative_property_of_multiplication_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5733/8776/files/chi_square_probability_distribution_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5714/files/xotetejap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/paradise_lost_book_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5224/3861/files/88338173204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/56970678394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6793/9743/files/36159901828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/xemejokux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/estimation_costing_and_valuation_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3927/7734/files/birla_sip_cancellation_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6087/9782/files/89699375752.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000766e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766E 5644 bytes
SHA-256: 2e217e6e21f17e69b2536f4736f71b4df0acbb611c600a3af874e0a00c5a368a
font_01_sfnt_off00008997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8997 10576 bytes
SHA-256: 64a0794de294ff7d04c87f06f5cbff2876b301cace26611803979e6939246b92