Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af0deac7a56a089…

MALICIOUS

PDF

52.7 KB Created: 2020-08-09 15:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4256fb77f2e21054e62b1e30350fba3 SHA-1: 26d8fb19e9a844ec6ca5ad8c531ea115b81bfc7c SHA-256: 7af0deac7a56a0898cbbbd851c97372031dda16a02d0ca43eac028004199134c
174 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially garbled, suggests a lure related to a 'Wegmans catering menu 2020 pdf'. The presence of a link farm and a malicious redirector indicates an attempt to lead users to malicious infrastructure, likely for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=wegmans+catering+menu+2020+pdf
    • http://duxunovo.diamondstewartanimation.com/uploads/1/3/1/1/131163599/fipixajupeno.pdf
    • http://keguzatu.thatsummer.org/uploads/1/3/0/7/130776407/4523709.pdf
    • http://files.susanaaleixolopes.com/uploads/1/3/1/3/131384679/viduzegetidumi.pdf
    • http://files.mskhor.com/uploads/1/3/2/6/132682570/fewogedawox-xabuguj-dajelenudunexo.pdf
    • http://zonivat.rijkenspark.com/uploads/1/3/0/8/130874493/filototu-vuvek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/mitoxumavalixotiwawasax.pdf
    • https://cdn.shopify.com/s/files/1/0437/0091/2283/files/sanitary_engineering_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/15590399227.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/wakezorene.pdf
    • https://cdn.shopify.com/s/files/1/0429/6258/3711/files/jibogisedukekadabepewoxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/zekanatibikorezan.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/vulunidotixigu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/toledoluxelotopagimaruriz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8280/9497/files/guxujerukakivutubupofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jomanumono.pdf
    • https://cdn.shopify.com/s/files/1/0428/9767/0303/files/fetivenelofumilodelig.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_off00007f83.bin
a60b2f6d631029c3ba60f15ca14d0db98e537bcde92acbf0c64b868511a38f9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F83 5500 bytes
font_01_sfnt_off00009229.bin
89cc9dacaaa379a9db6fc8e1f16ab5a57cf1e167186459e3ef5e616de2e02c62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9229 11080 bytes
font_02_sfnt_off0000b7fe.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7FE 4324 bytes

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