Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bee302068d992e2…

MALICIOUS

PDF

47.6 KB Created: 2020-08-17 06:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eaf44f8fc2da1a37036cb41c06329c7 SHA-1: 0261b8eb964c8eb38bcc3ab9896e88674af86526 SHA-256: 5bee302068d992e24051a6fdcddf8657f7d841a0295d93c2c56c639b095440a8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'wedding newspaper template' and the malicious URL, suggesting a lure. The presence of many external links, including to Shopify, indicates a potential SEO link farm used to distribute malicious content.

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=wedding+newspaper+template+online
    • http://pedet.biblelutheranchurch.org/uploads/1/3/0/9/130969959/a5869db66.pdf
    • http://files.stpeteretown.org/uploads/1/3/1/6/131637606/5200681.pdf
    • http://xuborar.theangelhouse.ca/uploads/1/3/0/8/130814238/ccf9fa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/nukozesewaji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/juwuretulilogozate.pdf
    • https://cdn.shopify.com/s/files/1/0437/0133/8266/files/mapa_turistico_la_paz_bolivia.pdf
    • https://cdn.shopify.com/s/files/1/0449/8325/5198/files/gas_adsorption.pdf
    • https://cdn.shopify.com/s/files/1/0431/9979/1265/files/doxutibujavajededunekal.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/tutorialspoint_online_java_formatter.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/76072578759.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0729/files/astm_a106_specification.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/13350266127.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_off00007cec.bin
1231e15ec1525bf9730a33ca4e5df7180d5bc3f7199e82c94bf6491527da0ef1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 5384 bytes
font_01_sfnt_off00008f3b.bin
654feeda98b2ce00f085b84e35d13c10ebc20847a92fdc3cf25ffc4cfbe90d39
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3B 10120 bytes