Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06597f2427120a0…

MALICIOUS

PDF

67.1 KB Created: 2020-08-16 11:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e880d2fb39726a27758008a3720e368f SHA-1: aef72e46dfb346e8971641f9a264989072a6b301 SHA-256: e06597f2427120a037cf0985f8d7ef60c504fbbb04e17683f22452d32c082c91
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Eclipse neon 4.6 free' and the malicious URL, suggesting a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector. The presence of a link farm heuristic indicates a potential SEO poisoning or spamming 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.ru/pify?keyword=eclipse+neon+4.+6++free
    • http://files.artoftherush.com/uploads/1/3/0/7/130775970/romezarirepixe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/loladexobo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/22480182260.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/bsnl_prepaid_plans_up_east.pdf
    • https://cdn.shopify.com/s/files/1/0433/6707/1894/files/wadagutewokewipowope.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/gukusa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0678/6725/files/wordly_wise_3000_book_8_lesson_8_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/zitojuxafijiwinupera.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/72360340539.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/taxatuladi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/behavioral_marital_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/1000_psychology_facts.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4c5.bin
6bb839a7d98704b41cba533c72c835573a2554e915274f2571be961d3d4d8e60
pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C5 5028 bytes
font_01_sfnt_off0000d5fc.bin
782678a47596ffa3f1ad051ada371d95bdc546d7b94a6184a57e952c86017698
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FC 12920 bytes