Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6959ef38ce0488…

MALICIOUS

PDF

49.0 KB Created: 2020-08-01 22:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1430c74e5cfdcc8601c58e92a7a3a800 SHA-1: e7d753742134aeab0c06fd33c071ddba66943c2d SHA-256: 4a6959ef38ce048884f569798cf4852c8ff7893295a87714ccebc374f159b819
160 Risk Score

Malware Insights

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

The PDF contains a lure related to a Chevrolet Corvette owner's manual, combined with heuristics indicating an advance-fee scam and a malicious redirector link. The document body and embedded link point to a redirector URL, which is likely used to funnel victims to a scam page. The presence of a large number of external PDF links also suggests a link farm for SEO manipulation, further supporting the scam lure.

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.
  • 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.
  • 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=chevrolet+corvette+owners+manual+pdf%252F+download+free
    • http://files.bedfellowsmagazine.com/uploads/1/3/1/0/131069934/9000152.pdf
    • http://files.fayettevillegatreeservice.com/uploads/1/3/1/3/131383949/nozinarig.pdf
    • http://files.stapletonfarm.com/uploads/1/3/0/8/130814115/xizibat.pdf
    • https://cdn.shopify.com/s/files/1/0438/2723/2918/files/fubimoxotisekugifopu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7238/files/28491967333.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/xativikepamanixi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/javixokusurixinaxusurixi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/kofarulerakilajenusotam.pdf
    • https://cdn.shopify.com/s/files/1/0435/4850/8311/files/11639265988.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/valaruminisojuzidaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/fomosekeg.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/24804622514.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sabam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fc1.bin
1b95a2a1ac04895db38b8283bdb883e40ad255aec47952086e8bb10a3549484d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC1 5488 bytes
font_01_sfnt_off0000925a.bin
c1c8ba5cf37c31f824b5a85b8817cb0c9bafb0f2032c40e7c671b5d452c1d496		 pdf-font-stream PDF embedded font (sfnt) at offset 0x925A 10560 bytes

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