Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b93c31650188421…

MALICIOUS

PDF

37.7 KB Created: 2020-08-29 18:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e92d06070353d36c8c2250d33e601a9f SHA-1: 09507021f3c149d3a34aa161f25a195534775c85 SHA-256: 6b93c316501884212b17aa20d565fe096aae823933d96ade0db88b3ccc313421
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a free shop manual, which redirects to a known malicious domain. This indicates a phishing or scam attempt designed to trick users into visiting a harmful site. The presence of numerous other PDF links suggests a link farm intended to manipulate search engine results or distribute malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=1966+mustang+shop+manual+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/51371199814.pdf
    • https://cdn.shopify.com/s/files/1/0439/1357/6603/files/atoms_for_peace_eisenhower.pdf
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/duvizosexemojuwesolaniki.pdf
    • https://static.usrfiles.com/ugd/b8c837_06f4b874ea354103be66a26c2c57c641.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa446c470eb4569818538220fc8a54d.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a741c2f450e490d8d5542c3a90a17ec.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/17949102371.pdf
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/dd_form_2860.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/wajomaremasar.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/brisbane_times_good_food_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/85960931986.pdf
    • https://static.usrfiles.com/ugd/b8c837_bec8430e06fd4bc1a8199ad3303ab3a3.pdf
    • https://static.usrfiles.com/ugd/576447_49ced3dd8d674193a6dcd1b08472039d.pdf
    • https://static.usrfiles.com/ugd/067ecb_56e5ef1d474e488682734cad1edd22f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_16ebe99b704746ec9d98455de98a22e5.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053bf.bin
bf07688e93ec0a3e29b4bf0c56d6137113d35ddab144da0d8b079ae6f0c13bdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BF 5580 bytes
font_01_sfnt_off00006684.bin
1f39b57c9777f9f3720be769ae1d5eb7e350714b8c63e77506c0cb74a2dd8728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6684 10436 bytes

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