Malicious PDF — malware analysis report

Static analysis result for SHA-256 244bdbe779f564cf…

MALICIOUS

PDF

43.0 KB Created: 2020-08-22 21:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf2d2cbfe5fcedee1b832ab9fa99bb6b SHA-1: 413d6ce37a8ad4c08d58c40515a0a5f6d7a602d8 SHA-256: 244bdbe779f564cf6f519315aee98e2d881d4b567bbbc99abdd718bdceecf2e0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=spotify+premium+windows+7', which is designed to lure users with a fake Spotify premium offer. The document also contains a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation to improve search engine ranking for malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=spotify+premium+windows+7
    • http://files.tealearchitecture.com/uploads/1/3/0/7/130739225/05be9.pdf
    • http://rigofub.boslerhs.org/uploads/1/3/1/6/131606419/xirofoku-nonavag-wezatewobexuvif.pdf
    • https://cdn.shopify.com/s/files/1/0437/2362/0503/files/dabagadodefokodi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/school_admission_form_format_in_word.pdf
    • https://cdn.shopify.com/s/files/1/0435/7157/6993/files/51604449102.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/joxidedizonumoneziji.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/14454581646.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/pemofetizatojokem.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/cat_adventure_games_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/cutting_diet_plan_female.pdf
    • https://cdn.shopify.com/s/files/1/0437/7935/8869/files/panojasinakesuxudifufefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vukanuzedatijaxugevune.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_off00006997.bin
f9a67315b818f5066561ad6ad3e42b5c7869fe7fca01dbb4d45f2a3ec959d245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6997 5320 bytes
font_01_sfnt_off00007bb8.bin
c4937b8ce86ca06715b9aac9dcc22b59cf2d6cc3014f0138bdd60ba0497bf8cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB8 10492 bytes

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