Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8fabc9d7323b970…

MALICIOUS

PDF

38.9 KB Created: 2020-09-17 16:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ba4e173cdd59615cb493192ed110c64 SHA-1: 5c76a956c831ff2770c497e2b9c368b0d25702e1 SHA-256: b8fabc9d7323b97085b33d5a6142f131c489883ec136a1c5164d744d0ab98ddd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary heuristic indicates a malicious redirector link to 'ttraff.me', suggesting an attempt to lead the user to malicious content. The document body, though heavily obfuscated, contains the same URL and other PDF links, reinforcing the attack pattern. No scripts were extracted from this sample.

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.me/wix?keyword=cohen+testimony+televised+streaming
    • http://files.stringsoil.com/uploads/1/3/0/8/130874278/a099b2da33.pdf
    • http://zetade.mariettasquarefarmersmarket.com/uploads/1/3/1/0/131070382/fajoxomejajej.pdf
    • http://dugat.chieftutor.net/uploads/1/3/1/4/131483249/c090bfcc0f99c.pdf
    • http://tajesex.alphafrenchbulldogs.com/uploads/1/3/1/4/131408024/dotorupukisowamawu.pdf
    • http://letoz.spknative.com/uploads/1/3/0/7/130740072/fewagutis-jobadasek-bajedadakalom-balepozi.pdf
    • https://0ce79d4d-bb8e-43a2-9bfa-a5403fa8e8ac.filesusr.com/ugd/3a38e0_55485a767e0f4481bbfb003bd123a1a6.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0439/4683/6123/files/pre_calculus_grade_11_tg.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/deja_vu_dream_catcher_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/elbow_bursitis_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/434876467.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/simple_business_proposal_sample.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_off00005bb3.bin
be57652bd4fdeee83b308265eccc312d006eb480f16617ef1de427956b62f9b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB3 5304 bytes
font_01_sfnt_off00006d96.bin
0d44bc7dda3bbc78dc2731867eff3369426f14acbceb0b98a8be6ca3b6f4c83e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D96 9704 bytes

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