Malicious PDF — malware analysis report

Static analysis result for SHA-256 6beb81f91b78e695…

MALICIOUS

PDF

41.6 KB Created: 2020-08-01 17:11:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 078c8741adf0993c2821c1fd788f577c SHA-1: 2277e862fe00db420b6ee2d210e1fba4c3431d9b SHA-256: 6beb81f91b78e6956c734b4cc37ec186be6b4aa9481adbf08ae1bac643d09f5a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a known malicious redirector, disguised as a coupon offer. The document body, though heavily obfuscated, contains text related to 'Kfc printable coupons 2016' and the malicious URL. This indicates a social engineering attempt to trick the user into visiting a harmful site, likely for financial gain or further compromise.

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=kfc+printable+coupons+2016
    • http://files.fingerhutpastries.com/uploads/1/3/0/8/130873708/ff00eb.pdf
    • http://files.bondkitchens.co.uk/uploads/1/3/1/3/131381031/784614.pdf
    • http://files.sidegiglikeaboss.com/uploads/1/3/2/7/132741162/fidubuf.pdf
    • http://files.jenniferjoseph.org/uploads/1/3/1/8/131856852/relutelofapalejuzoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/xarizonalitu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/44970946335.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/manavikofapifasamajoxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3656/5923/files/jezizoteloratutapeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/3020/8924/files/18140903628.pdf
    • https://cdn.shopify.com/s/files/1/0440/7581/0966/files/rigivage.pdf
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/okuma_lathe_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52657742202.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/40086068295.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/92948602289.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_off000064cf.bin
2f5b109f5d8a5e8dfd8700ad88c60b693535621c04e14c3145cecc0bfad0ce3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CF 5600 bytes
font_01_sfnt_off000077f0.bin
5b08112322284ecba2f86dce85e27000480e5aa5c68c1ee4ea5d78dd287d9a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F0 9852 bytes

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