Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1833c9a61cb2c70…

MALICIOUS

PDF

48.7 KB Created: 2020-08-11 20:10:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9cce654ff7a25c93ee6eb02511f01d51 SHA-1: 8bac9fd1267a3adeae4c51f3d607c6c92d0110c2 SHA-256: b1833c9a61cb2c7009d2680580f832f4da8b4b3cdf09342cf5b2af9ed8747eba
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=basics+of+battery+management+system+pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to URLs and appears to be a lure for a PDF document, aligning with a phishing or redirection attack pattern.

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=basics+of+battery+management+system+pdf In PDF document text
    • http://files.annettedelcanto.com/uploads/1/3/1/4/131406412/0af1fa5441bb7.pdfIn PDF document text
    • http://fajavimon.unifor2301.org/uploads/1/3/0/7/130738837/xifirijiwu.pdfIn PDF document text
    • http://betuxaw.marksmotivation.org/uploads/1/3/0/7/130738731/kofedafibaxuvis-roxexukifoligox.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/1/0434/1969/7310/files/nugiloduwakejevot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8800/1689/files/15107434713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6899/7288/files/wedding_march_mendelssohn_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/63124215432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/3590185073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mogapusezonoxifetomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/sports_vocabulary_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/anesthesiologist_s_manual_of_surgical_procedures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27347714529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/rawiguvawogevezikuwize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2289/2711/files/64160681152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/factorio_rail_blueprints.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/36603302210.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 4

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_off00008015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8015 5732 bytes
SHA-256: 94c726fe872ca716f693c8a55e3091968b6c9c9bebfb4f98c5b62de295424d7f
font_01_sfnt_off0000936d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936D 10068 bytes
SHA-256: 03156c973e0c932f191505d8c4ccf8c4965293572aab99c34efcbe1b513b751d

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