Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d06e385488b109…

MALICIOUS

PDF

44.3 KB Created: 2020-08-10 17:23:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4a09b6b763782832936e235df6991fb SHA-1: e2bc8fa4fbbf30fa58d9f735c7e9001acf780495 SHA-256: 10d06e385488b109f5bb0f0184cfa0d4477cfe55feafd1aa3b11c1e0b004fdd1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users to malicious sites via these links, likely as part of a phishing or scam campaign.

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.cc/pify?keyword=carrion+empire+pdf
    • http://poxuso.foreverbrownfield.com/uploads/1/3/1/0/131070152/a768de8ab93c.pdf
    • http://lavojibiz.circlecircushoopdance.com/uploads/1/3/1/4/131437363/tizex.pdf
    • http://files.kemisalako.com/uploads/1/3/1/3/131397940/c4c7f7b206e166.pdf
    • http://files.cninc.org/uploads/1/3/2/7/132740479/5324237.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/82516180017.pdf
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/textbook_of_physiology_by_a_k_jain_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/77046638642.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/11582386804.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/74937262003.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/temeremosiwugaba.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/the_notebook_movie_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4012/9692/files/minecraft_mortal_kombat_skin.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/87955159266.pdf
    • https://cdn.shopify.com/s/files/1/0436/1981/1490/files/automobile_engineering_books_kirpal_singh.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/strengthsfinder_2._0_assessment.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_off00006389.bin
ec1c02405ac70b968d37a6cc5384683d2bcf37d53dd6e4a2dd1d8e4c1273af99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6389 4708 bytes
font_01_sfnt_off00007369.bin
d6b955c91714fa47e836a2ce6a3456f9abc1e3f7b9d71f253d31d943d83f07fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 10312 bytes
font_02_sfnt_off000096ad.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96AD 4324 bytes

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