Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d72acba8b80141…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 03:04:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c787b7f0aeff33399a836c30e9ffec5 SHA-1: 400b3ba23d621052a79ada22bf3e9129db61d15d SHA-256: a0d72acba8b80141143f7d54ad331a59c475e398d5d47321098415c8d465fc65
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with the text "Colonoscopy guidelines asge". This redirector likely leads to a malicious payload. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting a link farm used for SEO poisoning or distributing malicious content. The ML classifier strongly flagged this PDF as malicious.

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=colonoscopy+guidelines+asge
    • http://files.costellohsie.info/uploads/1/3/1/4/131413905/470595.pdf
    • http://fipapa.wellnesslifestylelounge.com/uploads/1/3/1/6/131606066/8673644ca068.pdf
    • http://kubujono.alainnamacpherson.com/uploads/1/3/2/6/132682646/2223808.pdf
    • http://files.teahubveg.com/uploads/1/3/2/6/132682655/8dac3b6391c9b.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/coleman_powermate_5000_generator_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/alejandro_magno_biografa.pdf
    • https://cdn.shopify.com/s/files/1/0429/4079/2999/files/fewerowusobenita.pdf
    • https://cdn.shopify.com/s/files/1/0438/0613/0337/files/gokiwunegog.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/campaigner_personality_type.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/66215104455.pdf
    • https://cdn.shopify.com/s/files/1/0439/0033/8331/files/redupuku.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/laserudawik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6794/0765/files/robotic_arm_introduction.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/openvpn_duplicate_cn.pdf
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/jane_the_virgin_season_2_episodes_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/zadaxif.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_off00004e69.bin
dbd666b16c4221140737f19c62d869ddd86bc3062d9092c7d950bee766e0f71a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E69 5152 bytes
font_01_sfnt_off00006002.bin
820b9d4b9d190fce5c973d99d576b906e19e572ad0a6d1dab8c5837f01abcd49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6002 9940 bytes
font_02_sfnt_off00008229.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8229 16204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.