Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba7ae660b30c378…

MALICIOUS

PDF

35.6 KB Created: 2020-08-29 18:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 031e9bb439dd7608843732bd9d012c42 SHA-1: 504c506a5e47f7436298be0cf49295b432f0706f SHA-256: 5ba7ae660b30c378038b6aa504dd247e8b2ce7872db1bf9a36a018bfd24edf4a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.me/wix?keyword=how+can+i+join+joyous+celebration', which is flagged as malicious. This suggests an attempt to direct users to harmful content, likely as part of a phishing or scam campaign.

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.me/wix?keyword=how+can+i+join+joyous+celebration
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/eda9ba_0f022b7b9edb42d38a1f9a315ae4fa86.pdf
    • https://static.usrfiles.com/ugd/bb13a2_0f407fcb719e428197165d23aa2da794.pdf
    • https://static.usrfiles.com/ugd/b8c837_a107a1d0827641bd97289a95c729bf0a.pdf
    • https://cdn.shopify.com/s/files/1/0431/1040/0153/files/gikiramemodukim.pdf
    • https://static.usrfiles.com/ugd/b8c837_05f0478cb90445b1bd23fb2084d983f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_def89ea1257645e09c74abcd83d51160.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8a9b520642e47349851ec9d5c3ca9fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_02d3e4587d254423a7fbd95ea432ab12.pdf
    • https://static.usrfiles.com/ugd/6c032c_69ee9bc88c0c4b378f711561f84d5249.pdf
    • https://static.usrfiles.com/ugd/39cb9d_c0dea17b5525491cb6cccdf38b96c8bb.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_off00004bf4.bin
017670f03c6044a4b373e24a4bd9ea6b792d21e182151e3d8207dfea07e898e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF4 5164 bytes
font_01_sfnt_off00005da0.bin
f29c818ba58d38374f210cffe469035068b8c644331e8b618cf0d5d48c7fc4a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA0 10700 bytes

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