Malicious PDF — malware analysis report

Static analysis result for SHA-256 14060ed27ee5d898…

MALICIOUS

PDF

51.2 KB Created: 2020-08-20 20:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9ceb8d0682beca4c6f4a516e4715349 SHA-1: e69e1fa6f863c4f75c67e678f2efa45186b765f2 SHA-256: 14060ed27ee5d8986d82324e0e33cbe43cd7c6a401ba89b3efdc8d43eccc8888
174 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'fishing report'. The presence of multiple external PDF links suggests an attempt to distribute content or redirect users to malicious sites, potentially for phishing or malware distribution.

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.
  • 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.com/pify?keyword=fishing+report+southwest+florida
    • http://files.ehsdramagvfl.org/uploads/1/3/1/3/131398143/duxuvozawe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/paparoxokurifeginenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/82092595118.pdf
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/1305484139.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/52753915615.pdf
    • https://cdn.shopify.com/s/files/1/0462/8132/6752/files/zoxesekosupetetudo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/kodiletegevapenurepuwev.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/pozun.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/jigonipumesokiwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/91359957572.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/jutitotawumodo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6886/files/wewev.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_off00007c3b.bin
1bd895b7fc03797b70348fb848b5fd12e0f9973ba463df422100b8bbe2b3ecb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3B 5232 bytes
font_01_sfnt_off00008e07.bin
d86dc392df3093deca635bf1af16a075b5dd044bffec8abb4597b39177c82eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E07 10508 bytes
font_02_sfnt_off0000b1ff.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1FF 4324 bytes

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