Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0263ca66bf0a7b…

MALICIOUS

PDF

60.3 KB Created: 2020-08-26 03:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acc4655bba614cd74c5ef62130f2410a SHA-1: 73119562b916924e5e5e74f994315aca93c2c203 SHA-256: fd0263ca66bf0a7be3b57d02e9ec0d6c0d072b1d96ed7b6c30205a4101f21194
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=ramon+ayala+torrent'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many of which are generated for SEO purposes. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely leading users to a phishing or malware distribution site.

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=ramon+ayala+torrent
    • http://files.foodforthoughtandprofit.com/uploads/1/3/1/4/131437724/reguwed-kulalegopul-noxosu-warajimaxirabo.pdf
    • http://kidagukaj.eamtradio.com/uploads/1/3/1/3/131398008/bovimunodepunowe.pdf
    • http://files.carolinasiscebs.com/uploads/1/3/2/8/132815787/8fb3f38782.pdf
    • http://tinybit.cc/124b1875============ALBU
    • https://cdn.shopify.com/s/files/1/0433/3305/8715/files/lawyer_business_card_psd_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/conceptos_basicos_de_alimentacion_y_nutricion.pdf
    • https://cdn.shopify.com/s/files/1/0431/2157/4044/files/78472149325.pdf
    • https://cdn.shopify.com/s/files/1/0432/6627/7531/files/93895093549.pdf
    • https://cdn.shopify.com/s/files/1/0457/0261/1100/files/dasemukawetuzesis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/hillsborough_county_report_cards.pdf
    • https://cdn.shopify.com/s/files/1/0430/4499/5221/files/simadutopuxosilakavor.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/91077520999.pdf
    • https://cdn.shopify.com/s/files/1/0447/6744/5141/files/nelex.pdf
    • https://cdn.shopify.com/s/files/1/0441/4147/8040/files/1141537067.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1400/files/jufosi.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_off0000b3d2.bin
6b75193f5410e64be421f2c8f26305fbeee611698b3616922d12273467c133bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D2 4760 bytes
font_01_sfnt_off0000c3f6.bin
5bad7cf3e9630e5b22b319fa3e68bbfad5d71fc2edb551ccc4fcb2abc84ee252		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F6 9472 bytes

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