Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1413fd3584a3ee…

MALICIOUS

PDF

37.9 KB Created: 2020-08-11 13:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05d5a2020a27f0c40bc432c8daeccb5c SHA-1: e8af49b9a306a10b5f4deeeb48745794c31b2f50 SHA-256: ec1413fd3584a3eefc33f80a072e0e445f44e5d6f201c7c853be2378c3dc0440
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=livre+analyse+2+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF title, suggesting a lure to a malicious 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=livre+analyse+2+pdf
    • http://files.littlesurprisesboutique.com.au/uploads/1/3/1/3/131384113/ad0fc31d56f5f33.pdf
    • http://files.maximumwaters.com/uploads/1/3/1/4/131453574/xibulezi.pdf
    • http://wekux.besthairextensionswilmington.com/uploads/1/3/1/3/131398020/6648155.pdf
    • http://files.thesouthernmedium.com/uploads/1/3/0/7/130775108/vojadawite_wudisobufor.pdf
    • http://files.jasminedanker.com/uploads/1/3/0/8/130813325/7706846.pdf
    • https://cdn.shopify.com/s/files/1/0447/4054/2620/files/characteristics_of_social_science_research.pdf
    • https://cdn.shopify.com/s/files/1/0435/1993/4628/files/53561177600.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/pentecostal_bible_studies.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/rikugigowosebuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/57084785171.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/66907830911.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/21695398913.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/etre_et_avoir_exercices_fle.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/area_of_sector_and_segment.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049ab.bin
5077b48eefb7c509dd7a792d4a40569934c308cffc0842da90afd1486b38ff15
pdf-font-stream PDF embedded font (sfnt) at offset 0x49AB 4868 bytes
font_01_sfnt_off00005a44.bin
a20718b66bd67b02cb98f49a972ad86aca9092675c41b79e3ebea345c84490bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A44 10088 bytes
font_02_sfnt_off00007b42.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B42 4324 bytes