Malicious PDF — malware analysis report

Static analysis result for SHA-256 07bd2ea6890db2e7…

MALICIOUS

PDF

44.7 KB Created: 2020-09-14 00:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8c4fe0403f46ddd355150e3f2961355 SHA-1: a2b5acebf7e3c690e8f78418e1a93f6b10dc6fcf SHA-256: 07bd2ea6890db2e78486aaa77c776e9f3c7f5cdead9ea88b67e9efbdce0051ab
214 Risk Score

Malware Insights

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

This PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.me/wix. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting an attempt to lure the user to a malicious site. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.me/wix?keyword=how+to+hack+star+girl+on+iphone
    • http://zoluwov.borninswedenblog.com/uploads/1/3/0/7/130775918/rusemegelez-fifop-kekon.pdf
    • http://files.tipdi.com/uploads/1/3/0/8/130814432/de736554f2accb.pdf
    • http://files.napashuttlelimousine.com/uploads/1/3/0/8/130814284/nejisekadezis.pdf
    • http://wafogo.custercadet.com/uploads/1/3/0/8/130874426/c556d2bc7d14e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/37219646788.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/jajelobusukix.pdf
    • https://static.usrfiles.com/ugd/26481d_8b14404719044f5e80e23bea532faced.pdf
    • https://static.usrfiles.com/ugd/0aab01_abe15e8b46d845f4b35eb6dc091f3b1f.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_89250d50dcf84d10bce83e98796fc760.pdf
    • https://static.usrfiles.com/ugd/345929_9600c1f526ac4be6bf33b46181c52583.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_ebf39feb00a1422283ca991446155748.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_off0000703e.bin
aa72a8f16580ab44022dbb23f145d8c3c7c03a52bc286b8964e437661775daab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 5312 bytes
font_01_sfnt_off0000825e.bin
c406a385d59ba99dffb33d0ef981e2653d49f18c50050d28d7a518b0dbbf3f59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825E 10420 bytes

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