Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f52f8074098517…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 02:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99b2d29187e096cd3ecc6117bac95be2 SHA-1: 5b81391b9801de084bfae65fbf2308fa7fdd5d27 SHA-256: 12f52f8074098517a8c3c3dbebc93288f4d14f1b9c26a055bc8df25c7af76fee
162 Risk Score

Malware Insights

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

The PDF contains a link to `ttraff.com`, identified as a malicious redirector. This link is presented as a 'Manual for canon 7d mark ii', suggesting a lure to trick users into clicking. The PDF also contains a large number of external links, many pointing to Shopify, which is indicative of a link farm. The ML classifier 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=manual+for+canon+7d+mark+ii
    • http://files.axokok.org/uploads/1/3/2/3/132303359/vurakemerix.pdf
    • http://files.carolinacatholicchorale.com/uploads/1/3/0/7/130776304/gajikulogufi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/65829950567.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/xadamafilorowanut.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/91102010919.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/67149000659.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/23360800368.pdf
    • https://cdn.shopify.com/s/files/1/0440/6450/6006/files/tu_cerebro_creativo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/westworld_bicameral_mind_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/folidov.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/36302656060.pdf
    • https://cdn.shopify.com/s/files/1/0431/8861/7378/files/weight_calculation_chart.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_off00005f42.bin
f38e6fcc501be90a907787feb0da6801806c93ba9cac7cda918f183425fa30c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F42 4824 bytes
font_01_sfnt_off00006f8a.bin
bd872ccae85431b3b13b9759b428a93dc144a07bc3c8b97d1a64a61b163287a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8A 10044 bytes
font_02_sfnt_off000091f2.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91F2 4324 bytes

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