Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f21d4800812da27…

MALICIOUS

PDF

46.5 KB Created: 2020-09-11 09:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b80021e6f2a61bff34e26fc317040453 SHA-1: 93bcafb9994d35b70cff1c89b148122bbdd5c779 SHA-256: 2f21d4800812da27f414b3bfa51a2165f0a8ba4d9ffeee77c993077b7db1037a
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, directing users to 'https://ttraff.club/wix?keyword=malayalam+yaseen+book+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are benign but likely serve to mask the malicious one. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL and the link farm technique indicates a phishing or redirection attempt.

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.club/wix?keyword=malayalam+yaseen+book+pdf
    • http://mopozizuj.americanhomerealtyinc.us/uploads/1/3/0/9/130969191/67f569e.pdf
    • http://files.heatherseagraves.com/uploads/1/3/2/3/132302774/nufigidoruz-reverime-mojavo.pdf
    • http://mafejewo.hashomerhatzair.ca/uploads/1/3/0/7/130739873/4366639.pdf
    • http://files.earthriverproductions.com/uploads/1/3/2/6/132696263/vasawogulagodafuze.pdf
    • https://static.usrfiles.com/ugd/d2b720_7b276ce96ab5404dacc2f22002319947.pdf
    • https://static.usrfiles.com/ugd/c0fca2_5a379e31a97649baad9e76af5410272b.pdf
    • https://static.usrfiles.com/ugd/15ebe2_1078e62b8c2c44dd92daecabe6d7e45b.pdf
    • https://cdn.shopify.com/s/files/1/0439/9572/5982/files/tuning_superconductivity_in_twisted_bilayer_graphene.pdf
    • https://cdn.shopify.com/s/files/1/0431/6010/9210/files/84030213553.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/apache_hadoop_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/53385838439.pdf
    • https://cdn.shopify.com/s/files/1/0432/1309/5067/files/56875538634.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/44677028183.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/glucopon_225_dk_safety_data_sheet.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_off00006ab7.bin
4d1035791ee1f084a4c866a4e13b3b06a2effbb15c3d62aea447e00d771fd370
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB7 5064 bytes
font_01_sfnt_off00007bda.bin
f5f177bf1f1596dbf4a1bfa6150f223cbbbd01d60a9cd60d6082b7499a9f53aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDA 10420 bytes
font_02_sfnt_off00009f61.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F61 4324 bytes