Malicious PDF — malware analysis report

Static analysis result for SHA-256 21148399f0fa4da0…

MALICIOUS

PDF

55.4 KB Created: 2020-08-14 06:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff1a1a7e27f371c0a971921d5e4379b7 SHA-1: c6edf8aa50b0622de1b647a2e4728095a2b9468b SHA-256: 21148399f0fa4da0b1112979250d1237282b2bfc175003d2cd441e9a17563275
120 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm. The embedded URL 'https://ttraff.cc/pify?keyword=intralinks+annual+report' is a known malicious redirector. The document body, though heavily obfuscated, contains text that suggests a lure related to an 'Intralinks annual report'. The primary attack vector appears to be directing users to malicious infrastructure.

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.cc/pify?keyword=intralinks+annual+report
    • http://files.mmakhaolak.com/uploads/1/3/1/6/131606861/vawopigiwow.pdf
    • http://files.elizabethtreadwell.com/uploads/1/3/0/7/130740443/fasagufuzel-jagazot-xakezowa-dejopumof.pdf
    • http://files.leterbark.com/uploads/1/3/1/8/131856358/mavogufonopot-sofujeno-tunodubapebo-mozatixije.pdf
    • https://cdn.shopify.com/s/files/1/0435/1921/3727/files/likelipimuxamuwegof.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/zuzubowufitukeforetadef.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/70959138304.pdf
    • https://cdn.shopify.com/s/files/1/0435/8799/3763/files/pdf_world_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/bewurij.pdf
    • https://cdn.shopify.com/s/files/1/0437/8837/0072/files/5021550867.pdf
    • https://cdn.shopify.com/s/files/1/0427/4506/9724/files/focas_1500c_bilge_alarm_manual.pdf
    • https://cdn.shopify.com/s/files/1/0447/2481/3977/files/john_deere_240_skid_steer.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/ujt_characteristics_and_relaxation_oscillator.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/21744735268.pdf
    • https://cdn.shopify.com/s/files/1/0447/1911/2345/files/fire_accident_investigation_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7935/1968/files/modified_ashworth_scale.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_off00008c4e.bin
13ea579b145e9c80607611fc2d9f9f3d580ef91947164079ce7303733793702f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4E 4816 bytes
font_01_sfnt_off00009caf.bin
4fff9287d4fe42cf4adf3ca5a9eef36afa9376d82a4c2ab16be23c665a4e7829		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CAF 16492 bytes

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