Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce8af14aa0e9389…

MALICIOUS

PDF

35.1 KB Created: 2020-08-19 11:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23aa900d675791f464cca2b794358395 SHA-1: 2a39d7803662eb2933b179d25ff46ce97fc1560c SHA-256: 0ce8af14aa0e93897de1ca25af4ebbbdbe80a01ef19ad57f6fe88896b0b506d4
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including one pointing to known malicious redirector infrastructure (ttraff.com). The document body, though heavily obfuscated, contains references to 'Bmo mastercard contact information' and a URL that appears to be part of a link farm. The presence of numerous Shopify links suggests an attempt to disguise malicious content within seemingly legitimate hosting. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=bmo+mastercard+contact+information
    • http://fifabulos.magicandlightcollection.com/uploads/1/3/1/4/131408022/bomari.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5332/5224/files/takorosipede.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/table_of_contents_template_for_science_project.pdf
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/pigewagudag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/rimofeloxokexugemukifa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/13032471691.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/xobalobasizasa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7605/files/wofupukunodasolux.pdf
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/86573661392.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_off00004b19.bin
8d1e804e24e5862f3f8b376df66a131f5f496d01481eb399b56b90f103416d63
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B19 5184 bytes
font_01_sfnt_off00005c9c.bin
c740adc55187131898f6871cbc67bf3e6f0fb43d6690104c652746c9f4a4edf1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9C 10392 bytes