Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a529d53b719e2b8…

MALICIOUS

PDF

52.4 KB Created: 2020-08-15 06:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27b2b2f8ceb1ceb4c12c0f3582ead60a SHA-1: 88e976456673ca604edcb17876c9d35a3dbfb335 SHA-256: 6a529d53b719e2b86e7239faec9d24e31f8f76c7aa15a6abdf547ed0fc7ea74c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to a 'simple decision making matrix template' which is a common tactic for advance-fee scams. It embeds numerous links, with the primary one leading to a known malicious redirector at 'ttraff.com'. The ML classifier also strongly indicated maliciousness, supporting the advance-fee scam classification.

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.com/pify?keyword=simple+decision+making+matrix+template
    • http://files.houseoflifeonline.com/uploads/1/3/1/3/131379919/vurevikadunozur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6104/2591/files/gta_5_stunt_jump_locations.pdf
    • https://cdn.shopify.com/s/files/1/0432/7404/3552/files/minecraft_trigger_command.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/isro_space_quiz_questions_and_answers_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/19606256006.pdf
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/11290959289.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/zifabugasut.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/silence_rom_kodi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/all_yoga_asanas_postures.pdf
    • https://cdn.shopify.com/s/files/1/0433/4364/2792/files/perl_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5355/files/80484653290.pdf
    • https://cdn.shopify.com/s/files/1/0428/8351/4527/files/lawewetaledadono.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_off00008f55.bin
c7893248810d485b839163f104eb9f698e6278c4b3918f34010f454a9a175ad5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F55 5628 bytes
font_01_sfnt_off0000a25e.bin
7234a7fb52cfceccaccad3a1dae1941d0f66940606cb7a062891d2668f035e1f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA25E 10120 bytes