Malicious PDF — malware analysis report

Static analysis result for SHA-256 070b971511554ee6…

MALICIOUS

PDF

37.3 KB Created: 2020-09-19 03:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b570744b25d297336d5988ebb2325b6e SHA-1: 8d904b618f980d734f17f946dc5bec134d09e1f6 SHA-256: 070b971511554ee6f0944c52a24b5057a9199fa36461bd1aa89f86a17c055f89
182 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 heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of a link farm indicate an attempt to direct users to potentially harmful content. The 'SE_INVOICE_LURE' and 'SE_CALLBACK_LURE' heuristics suggest a phishing or scam pretext, likely leading to further malicious activity.

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=d%2526d+4e+prestige+classes
    • http://files.mymtzionumc.com/uploads/1/3/1/4/131438142/6767085.pdf
    • http://wavex.goodmanhomesltd.net/uploads/1/3/2/8/132814718/3810772.pdf
    • http://files.you-are-the-one-and-only.com/uploads/1/3/1/1/131164394/jumirigalejukugisa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/55276205193.pdf
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/35592367848.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/fezula.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/58608034492.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2506/files/afb_staining_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/dedesokozudomuwojonujedo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/82295270518.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/16987509189.pdf
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/glyph_hard_drive_4tb.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/fepajewavefugiz.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_off00004cc9.bin
7ae7033242d2895dfdf42de9261de94e15094fc35526834ab45b60c2f127e7f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC9 3484 bytes
font_01_sfnt_off00005835.bin
3aaa3c93bb11f00dbe5e65536503b3a2555082c22a9e782528d7f098b3b7e552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5835 10228 bytes
font_02_sfnt_off00007b35.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B35 4324 bytes

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