Malicious PDF — malware analysis report

Static analysis result for SHA-256 150c622f096a3938…

MALICIOUS

PDF

42.3 KB Created: 2020-07-31 23:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3223b0e02c40dcea9c0f5222d0b95b2 SHA-1: c52c5b9cad5825a1dd8c427dfbeb009bb081038c SHA-256: 150c622f096a393834870b7fe184f7c6bd8c8ccb30c18bd91807747994ab491b
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=photoshop+cs3+crack', is flagged as a malicious redirector. The document body and heuristics indicate a lure for cracked software, combined with language suggesting an advance-fee scam. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to attract traffic and potentially distribute further malicious content.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=photoshop+cs3+crack
    • http://files.guavalavahawaii.com/uploads/1/3/1/3/131380915/3db17fe4a.pdf
    • http://files.cpsschoolcounselors.com/uploads/1/3/0/8/130813992/e1b0b0b7405a.pdf
    • http://files.anneburkephotography.com/uploads/1/3/2/6/132695258/zajobixixo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/gusif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70277109097.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/muxaripilusi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0718/6843/files/rapegoxolabutexojarek.pdf
    • https://cdn.shopify.com/s/files/1/0431/1954/2434/files/zafofusezunixekijusavo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/pikesafasajudepixevigifa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/32407827008.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/jiradiwefuvufosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/kajasuwapigibibituri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48675385277.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/5477708503.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d4.bin
28144b452f1cea1892bc3c8e3e67bed2efedce92a6d8cc9d6d71fe417afa45ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D4 5220 bytes
font_01_sfnt_off0000798b.bin
1b779884e0e7c238e98038d2a04b2d7719c642fadedd320988536b6899d98706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 10432 bytes

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