Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be8eaf2fc1803bb…

MALICIOUS

PDF

36.3 KB Created: 2020-09-10 07:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64c5caadf0dc3f633822aa1b59a9c2ee SHA-1: 48a3677bf0ba4f38396887f0834025d576d9fbe8 SHA-256: 6be8eaf2fc1803bbf2e10c87c3e05e14cec144e8c446d9b0282732f16a8e3108
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm. One of the primary links, https://ttraff.club/wix?keyword=peterpan+yang+terdalam+cover, is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to direct users to malicious infrastructure. No scripts were extracted, but the presence of a malicious redirector and a link farm strongly suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/wix?keyword=peterpan+yang+terdalam+cover
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/4d548e_2d5f041b10e14e20b625177c2c74291d.pdf
    • https://static.usrfiles.com/ugd/418e76_8c438b432238402aa8259dcda76b0600.pdf
    • https://static.usrfiles.com/ugd/bfd504_ac0419e1d0674edca8e1183798ab684b.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/sokonujef.pdf
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/ragnarok_mobile_alchemist_job_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0004/files/91836234203.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/57931569953.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/abbreviated_accounts_template_excel.pdf
    • https://static.usrfiles.com/ugd/221f3a_337845a736b6434aa28cac22f8a1249e.pdf
    • https://static.usrfiles.com/ugd/21e6f2_9e21f6f5258d4ee1b9b5c8c88ffa4f60.pdf
    • https://static.usrfiles.com/ugd/c1615c_fe154194008f490eb7c1f4c0baff3d50.pdf
    • https://static.usrfiles.com/ugd/1e52da_7040623093754116886f4e1ce66ebd63.pdf
    • https://static.usrfiles.com/ugd/b8c837_5156146dd94d42c391dd8b185ecb2520.pdf
    • https://static.usrfiles.com/ugd/23b571_3fd69ff6558f45d8ac07343b5295724d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000430a.bin
8e6b111a5b3c68a38324599cda56461ade2aeb4a5b39ee0515d964550f9f8967		 pdf-font-stream PDF embedded font (sfnt) at offset 0x430A 5116 bytes
font_01_sfnt_off00005461.bin
032f2b15aa850d93fd6f5b6009902aef0ace47634d6b7c9617494dbee93ecd70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5461 10032 bytes
font_02_sfnt_off00007661.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7661 4324 bytes

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