Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce40342008a9106…

MALICIOUS

PDF

41.0 KB Created: 2020-09-01 20:46:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 375ba754a9722324194aac5d61543f87 SHA-1: 6c80999134f8fa7f9ad9edc96cdc8af327487aa6 SHA-256: 7ce40342008a910633152ba571400cf17309af8a0468c6345d85f991a37dba65
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is likely used to redirect users to malicious content or phishing pages. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. 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.ru/wix?keyword=philip+glass+candyman+sheet+music
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3382/9271/files/98302616451.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/wibenugaragewop.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/85840088955.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/93234505313.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/5469830817.pdf
    • https://cdn.shopify.com/s/files/1/0458/3289/6675/files/florida_civics_eoc_practice_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0466/5471/8117/files/85783405716.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/65935121658.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/affirmative_vote_crossword_answer.pdf
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/cattell_culture_fair_iii.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/bewozafomakasebisazo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9409/7576/files/91216851468.pdf
    • https://cdn.shopify.com/s/files/1/0463/1196/4829/files/21945756359.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7261/files/dutuvevuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0293/files/advanced_life_support_course_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/1255/2864/files/95187671283.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057e4.bin
4af6a0d8bfd1324101d3fdcdae510e3f1a88f32ef3952f7eed8e55571bb1fea4
pdf-font-stream PDF embedded font (sfnt) at offset 0x57E4 5496 bytes
font_01_sfnt_off00006a7d.bin
ecbeec4df57acdbb3b31da6a068b5aa5742b6b81508650b23646b0eada87ff2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7D 14108 bytes