Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb0844b763aeadc…

MALICIOUS

PDF

43.5 KB Created: 2020-08-19 07:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7fdf7fc39735122840dd9efc9a8bfa04 SHA-1: 8b3a610da1c95415eae28ad4b448fbad2de77740 SHA-256: feb0844b763aeadc33dc7bd4d7035895562c60434cf00ac52e625b90f50fa643
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bitdefender+free++full+version+for+pc'. This URL is embedded within the document body, suggesting a lure to download software. The document also contains a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, one of which is 'https://cdn.shopify.com/s/files/1/0431/6862/8892/files/bimutadapekutunit.pdf'. The primary malicious link redirects to a known malicious domain, indicating a phishing or malware distribution attempt.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bitdefender+free++full+version+for+pc In PDF document text
    • http://gesidobij.mainstagetheatre.com/uploads/1/3/1/6/131607240/8557768.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/1/0431/6862/8892/files/bimutadapekutunit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/niwafesufona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/deductive_reasoning_math_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/the_sea_of_thieves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/lixovumadonolopotokuget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/xatakorevodejuzafejodak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/high_tibial_osteotomy_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/17646550698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/kiwalivev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/reality_testing_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/78303223170.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 2

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_off00006d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D40 5048 bytes
SHA-256: d06f6c4f8325244ee49ae0ea2a59c7b7a6f2b231ad222979c990ad5ed3bcb4b8
font_01_sfnt_off00007e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E85 10256 bytes
SHA-256: 7f1878c75d55b2017e9c3b0a1cabd65e3dc17b25957ac542a2deebe7aaa41643

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