Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2ffc5ab67d4298…

MALICIOUS

PDF

58.5 KB Created: 2020-08-05 09:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e524dcfdcb60b4163c65d99f585df41 SHA-1: cfa55c6368b4e4d1a4e392c9c3c03f882ae15aea SHA-256: 6c2ffc5ab67d429868686cb510b35a25b33e5df107fe9192339e934c9cebc470
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed for SEO manipulation. One critical link redirects to a known malicious domain, ttraff.com, which is likely used to host a phishing or malware delivery page. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to trick users into visiting a malicious site.

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=arquitectura+moderna+en+el+peru+pdf
    • http://files.livingwordpub.com/uploads/1/3/0/7/130738504/1538540.pdf
    • http://dasuda.vadrozsapulis.com/uploads/1/3/1/1/131163658/5dc3dceaf2.pdf
    • http://files.borderskirental.com/uploads/1/3/1/4/131482976/pusudapi-vanuridadop-pinelagi.pdf
    • http://files.jordansgeneralstore.ca/uploads/1/3/1/3/131380354/famomarinumexog_siveni_bedefur.pdf
    • http://files.myapplepodcast.com/uploads/1/3/0/7/130775892/d16729d8c2ec20.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/39805053734.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/2004_ford_freestar_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/4619/9711/files/50901557940.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/xesajabazoworafikulu.pdf
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/database_systems_thomas_connolly_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2711/files/twilight_breaking_dawn_part_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/57961058999.pdf
    • https://cdn.shopify.com/s/files/1/0431/4310/2613/files/sivolop.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6949/files/29302615429.pdf
    • https://cdn.shopify.com/s/files/1/0429/4773/9811/files/top_eleven_token_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/21980482625.pdf
    • https://cdn.shopify.com/s/files/1/0432/8813/3787/files/fezemuwobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000095c3.bin
24676c3f8021bca405175fba55199580089a2c9dd7c89db5c0d2af652a3826b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95C3 5120 bytes
font_01_sfnt_off0000a70e.bin
5b6b1821fb0830a5c857825f975e776ab2bb7e39a0e666dc643c1dc80f44e4da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA70E 11896 bytes
font_02_sfnt_off0000cca9.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA9 4324 bytes

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