Malicious PDF — malware analysis report

Static analysis result for SHA-256 c487a6b94a168634…

MALICIOUS

PDF

57.3 KB Created: 2020-08-12 22:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9531eb0dfdca65b3e35eff88a99ed8a9 SHA-1: 9eb0ef9c04f4c34a4f748126b34e67738f9c7d69 SHA-256: c487a6b94a16863437cbde99dd6a63cfca0b8c56d4e836245bc2a7f3be4ab333
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, directs to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to a Nikon microscope manual and the URL itself, suggesting a lure to disguise malicious intent. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for phishing or malware delivery.

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/wb?keyword=nikon%20tms%20inverted%20phase%20contrast%20microscope%20manual In PDF document text
    • http://files.kansasyouthchoraletopeka.org/uploads/1/3/0/7/130739498/guwebitafudikenaxofe.pdfIn PDF document text
    • http://files.neurobittech.com/uploads/1/3/1/1/131163669/978525c8f6d734.pdfIn PDF document text
    • http://files.threesisterstearoom.com/uploads/1/3/2/6/132680813/c8cf417.pdfIn PDF document text
    • http://files.whiteroseartstudio.com/uploads/1/3/0/7/130739039/7713686.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/1/0431/1416/8480/files/xofipemuzoziliwosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/malaimalar_news_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/78689131639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5671/6183/files/xaravizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8110/9405/files/10551129491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/pegubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3177/9733/files/62402112788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/37779434266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4120/1064/files/xusutanef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6296/5912/files/78977099882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/xujewawonexaxikonuziti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4493/6599/files/lotusifakudetuxifigemip.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_off000095b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B2 5404 bytes
SHA-256: 92674957c98539b47710621c89f65cadf2d7c1119de7c912abdde99fc2af6c5c
font_01_sfnt_off0000a7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7E9 14984 bytes
SHA-256: 5193794ecdeb50a7e0da638c7c475f6df994377aeee5a62d8f99edcda4b8386a

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