Malicious PDF — malware analysis report

Static analysis result for SHA-256 35976294ae64a1ff…

MALICIOUS

PDF

40.0 KB Created: 2020-08-19 20:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7edacaf546dd8d5df7c911dbeb937ad SHA-1: 6a8f839d2403ae8ab6b8702267576a9981ee1649 SHA-256: 35976294ae64a1ff32724e1e601dd7ebd59229ab13f17c962e73fa2cb872dca5
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=gantt+chart+project+plan+template, which likely serves as a lure. The document body, though heavily obfuscated, contains references to Gantt charts and project plans, suggesting a social engineering pretext. The presence of many external links, including those hosted on potentially compromised domains, further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=gantt+chart+project+plan+template
    • http://xazerarar.millbrookresortohio.com/uploads/1/3/2/6/132695832/0796a3af94997.pdf
    • http://files.seventhdaybaptist.ca/uploads/1/3/1/4/131483491/28b785d521.pdf
    • http://dowepe.royalmarineser.com/uploads/1/3/2/6/132696067/73c939504ed6375.pdf
    • http://files.aaronkrerowicz.com/uploads/1/3/0/7/130739906/fater.pdf
    • http://files.faithconnectionsonmentalillness.org/uploads/1/3/1/4/131438477/62869b278.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/21484531811.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/72510765338.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5577/files/98130641073.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/davixoligiwonosenu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1678/0956/files/sociologie_l1.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/11531298390.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/soda_login.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/blockbuster_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3067/files/4420635838.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8865/files/banesezafufik.pdf
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/17622853457.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_off000061a4.bin
05de7098a728e0af34478957ebb8646e431e91009c80aad1b9c9375547cc9e0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 5104 bytes
font_01_sfnt_off000072d9.bin
ad811519485de3721470300548fd1b73dc6922fd35e45f9b15ee489af28047f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D9 9456 bytes

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