Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e70314a3feb2331…

MALICIOUS

PDF

36.4 KB Created: 2020-08-10 07:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bd4b7fee4e5a043dd22644c85d39db1 SHA-1: 778dd71e797c26456549c24899ac278d225f2d08 SHA-256: 0e70314a3feb2331c803b5222f4022976c0b3ae5d7570b3e802a94c8a7a37da6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'sheet music pdf' and the malicious URL, suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to disguise the malicious intent. No scripts were extracted, but the embedded URL and heuristic firings strongly suggest a phishing or malware distribution attempt.

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=tangled+i+see+the+light+sheet+music+pdf
    • http://files.brunchinparis.com/uploads/1/3/2/7/132740880/d16749e6.pdf
    • http://files.ractproductions.com/uploads/1/3/1/3/131380521/nosizanerab.pdf
    • http://files.adamhager.com/uploads/1/3/1/4/131406036/550c34.pdf
    • http://lubunep.topchoiceinspectors.com/uploads/1/3/1/3/131379803/fuxuv-gavisilu-demaxelojimon-gezolixefimita.pdf
    • http://files.fourseasonsrentalequipment.com/uploads/1/3/1/3/131383892/lilomaxamibipo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdf
    • https://cdn.shopify.com/s/files/1/0447/7186/8821/files/curso_de_ingles_intermedio_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/reliability_engineer_resume.pdf
    • https://cdn.shopify.com/s/files/1/0436/0817/8850/files/dasefopewumebimug.pdf
    • https://cdn.shopify.com/s/files/1/0436/1450/3075/files/mevusobasefupe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/12569379798.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/40889156015.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2038/files/field_cancerization.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/lejisabi.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/catecismo_para_primera_comunion.pdf
    • https://cdn.shopify.com/s/files/1/0432/9055/8622/files/25326113115.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_off00004edb.bin
6cf70b3b6f56ca8b0b382940468823e83ea2ac373a3198ab702c83b7aa391b7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EDB 5424 bytes
font_01_sfnt_off0000612e.bin
8ecfd2e9d6c5f4e903730b564e2975a64c05739f9a431ca4c7ae081c8f5cc552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 10328 bytes

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