Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d67d807bd18fa4…

MALICIOUS

PDF

42.6 KB Created: 2020-08-25 07:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12a05603657db51c6cd16a4f9ef08c12 SHA-1: 95ce091c7eacf31eaa65e312253e6a47d0f477bb SHA-256: b6d67d807bd18fa401f29f1f1f4ae3cfb133bcb0e899a673ac5eb2ea03f076c7
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to shopify.com, but one critical link redirects to 'ttraff.cc', a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'icas maths paper d 2015 answers', suggesting a lure to trick users into clicking the malicious link. The presence of a visual download button further supports a deceptive workflow.

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.
  • 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
  • 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=icas+maths+paper+d+2015+answers
    • http://kavasumi.douglaslovelace.com/uploads/1/3/1/0/131070178/mukobamosagedenar.pdf
    • http://sewajon.tiered-educational-consulting.com/uploads/1/3/1/6/131637562/ruxevopo.pdf
    • http://files.latinahilara.com/uploads/1/3/1/1/131163969/6585841.pdf
    • http://rudotaxen.ginnylcusack.com/uploads/1/3/1/4/131453902/0e6ce083359.pdf
    • http://files.juliadenboer.com/uploads/1/3/1/3/131379709/rizujegem_joxipunemilebix_dudavetumav.pdf
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/cours_grammaire_francais._gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4487/2085/files/form_4868_mailing_address.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/99079613691.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/building_construction_agreement_format_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64238793182.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8483/files/bupofowoki.pdf
    • https://cdn.shopify.com/s/files/1/0431/7485/4820/files/viruses_are_they_alive_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/97836849074.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/78598808535.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/algebra_all_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0285/files/66033861933.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0652/files/schneider_mcb_c60h_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/vokozidimebidol.pdf
    • https://cdn.shopify.com/s/files/1/0432/4478/1735/files/evine_channel_guide.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/
    • https://cdn.shopify.com/s/fil

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bfa.bin
1c146fcbd0ad1ee36995d23ca62067199edb653833aa39c7dfa660bbfe3d8cd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFA 5388 bytes
font_01_sfnt_off00006e2d.bin
6f5ff47467a0a3b2e1a2c183bae094d84d1ef59cb9a9c84b218ee1af11dc6ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2D 9704 bytes
font_02_sfnt_off00008f63.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F63 4324 bytes

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