Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e51f375f6a8c7f…

MALICIOUS

PDF

42.9 KB Created: 2020-08-27 16:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22ddd9ef32aff206f9b12509e82d39f0 SHA-1: 9a3529a29587d464b08920e5f6458291f9ce406b SHA-256: b0e51f375f6a8c7f9eec0b621e89df32c971940b2709a00f953428fd04355b95
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious download or phishing page. The document body, though heavily obfuscated, contains the same URL and a reference to a game, suggesting a lure. The presence of a link farm heuristic further indicates a malicious intent to distribute links.

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.cc/pify?keyword=galaxy+on+fire+2+valkyrie+free
    • http://files.ljubaavvakumova.com/uploads/1/3/1/8/131871701/8373602.pdf
    • http://files.mastercreatorsadventureretreat.com/uploads/1/3/1/4/131406182/vupuro.pdf
    • http://files.theartofkatelynwood.com/uploads/1/3/0/7/130738870/fazuvilelu.pdf
    • http://mimudanuj.tulipshealthandbeauty.com/uploads/1/3/1/6/131606140/gewaxivob.pdf
    • http://files.czsworld.com/uploads/1/3/0/7/130775475/fasafugo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7402/5640/files/67695306906.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3442/files/degibedujebejuzoremenoja.pdf
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/databedopidulixin.pdf
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/titurojegukowewemexafofev.pdf
    • https://cdn.shopify.com/s/files/1/0431/5332/6242/files/les_cestodes.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9367/files/rebutitixurixalamek.pdf
    • https://cdn.shopify.com/s/files/1/0448/0958/4802/files/bullmastiff_puppy_care_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/persamaan_dasar_akuntansi_pemerintah.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006576.bin
bc19dc68030c40248cf3fbccc53d26bba9601de1a3d74653ca71a3b50e599e32
pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 5040 bytes
font_01_sfnt_off000076c9.bin
f0b3b88fa5383f9f6b17c64d361949b30f677adcc86651bbbdfd128b397eea01
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C9 11952 bytes