Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1d438f14919d598…

MALICIOUS

PDF

50.8 KB Created: 2020-07-29 23:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f95650fa1204a78858f8389d777dfef4 SHA-1: d92766c1347cda644492e13193884b35e6537f26 SHA-256: f1d438f14919d598fc32929abef0b2fdc977f523e0a9fd8f1a0e8348bb222eed
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains text related to 'Jamalife helpers global compensation plan pdf', suggesting a lure for potentially fraudulent schemes.

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.ru/pify?keyword=jamalife+helpers+global+compensation+plan+pdf
    • http://files.sachagrosselart.com/uploads/1/3/0/9/130969209/belizifimekedaxuwuzu.pdf
    • http://files.roadtriptravelogues.com/uploads/1/3/2/8/132814996/6026156.pdf
    • http://files.socapital.co.nz/uploads/1/3/0/7/130738512/woxotonisudiz.pdf
    • http://files.iam720.org/uploads/1/3/1/4/131455283/dedigelu_pisikirubu.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/80026252689.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/gabubusepodupagobolulax.pdf
    • https://cdn.shopify.com/s/files/1/0438/2982/1600/files/joledisoridipawawaxakoger.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/11330894720.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/51699740353.pdf
    • https://cdn.shopify.com/s/files/1/0432/3521/3479/files/rerafotizan.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/tunukosekus.pdf
    • https://cdn.shopify.com/s/files/1/0432/6473/7433/files/61657169021.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/98251496545.pdf
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/2756525704.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/46896555256.pdf
    • https://cdn.shopify.com/s/files/1/0429/5960/1830/files/70036034550.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ce8.bin
b8a20cfbd95af8d5983bb07052b390163fd2d3eaa8671121d5537c759cff3682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE8 5488 bytes
font_01_sfnt_off00008f51.bin
ad6b7d89c5fa709855afe00301495b63a95e2ac7f715e2abd2fcaf396ca2e5f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F51 2268 bytes
font_02_sfnt_off000099b1.bin
51c06a53f56b6fbb2bc86ba1643bae883ec2464aea8834283d8fc354f09d80f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99B1 10392 bytes

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