Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c18b1e55170120d…

MALICIOUS

PDF

50.0 KB Created: 2020-09-04 08:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb974f639462c4ac000fb4281e0e8507 SHA-1: 6fa8979d709502c3699545d906bf00ee9d489c22 SHA-256: 4c18b1e55170120d0387b56dcc3d3609bfb39f4c0ed7ae4d4029c59fd7ae0831
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to this redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for phishing or to download further malware. The presence of numerous PDF links also indicates a potential SEO poisoning or link farm tactic.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.me/wix?keyword=ibm+qradar+risk+manager+datasheet
    • https://cdn.shopify.com/s/files/1/0434/3667/1132/files/kuzapujurezup.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1299/files/37524052436.pdf
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/29691350987.pdf
    • https://cdn.shopify.com/s/files/1/0435/4700/0983/files/9745733848.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/caligola_camus_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0434/7818/8198/files/22991130233.pdf
    • https://cdn.shopify.com/s/files/1/0428/1987/9079/files/60997514882.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7037/files/61039534340.pdf
    • https://cdn.shopify.com/s/files/1/0448/3697/8849/files/lujurabokixavot.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3691/files/72882833879.pdf
    • https://cdn.shopify.com/s/files/1/0457/7463/5174/files/caa_thomas_cook_claims_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/vabijudi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/71808694801.pdf
    • https://cdn.shopify.com/s/files/1/0450/8627/7784/files/38866431652.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/tamil_language_album_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5504/7068/files/77591866743.pdf
    • https://cdn.shopify.com/s/files/1/0428/8852/8035/files/biology_stephen_nowicki.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_off000081ef.bin
902663a3b8706e79bbd6550123ddba5d0de2d166f31d6d00ed09a0152a278eff
pdf-font-stream PDF embedded font (sfnt) at offset 0x81EF 5476 bytes
font_01_sfnt_off00009458.bin
4be5ffbac1c68f8802bb8e50331c0bbb1fb67c59799f94551d3eaad7a91e0e95
pdf-font-stream PDF embedded font (sfnt) at offset 0x9458 11760 bytes