Malicious PDF — malware analysis report

Static analysis result for SHA-256 811cbe7744c0a7a3…

MALICIOUS

PDF

73.4 KB Created: 2020-08-06 09:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85c1ef45279a67bcb237500c4e9efd8b SHA-1: e124b6467474adcba6e594254fb4146ead8510fc SHA-256: 811cbe7744c0a7a3fd3a3f83442a6afb6b47109bfabd59ac000b759412075c30
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=cracking+the+genesis+code+pdf, which is likely used to redirect users to malicious content. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs supports a phishing or redirection attack pattern.

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=cracking+the+genesis+code+pdf
    • http://files.gillettebikeshop.com/uploads/1/3/1/4/131438044/43e5c67a0f5ad5c.pdf
    • http://files.allbacksosteo.com/uploads/1/3/2/6/132681863/wejil.pdf
    • http://penokuma.migidamusica.org/uploads/1/3/0/7/130775169/9527569.pdf
    • http://files.spiritofthefiddle.ca/uploads/1/3/2/6/132681698/e2c6edddbe3b8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6502/4416/files/70102816096.pdf
    • https://cdn.shopify.com/s/files/1/0429/6327/1833/files/78492184060.pdf
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/10322983978.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/2072579388.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/pipujomesubitus.pdf
    • https://cdn.shopify.com/s/files/1/0440/9825/7048/files/78724725113.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/visawegepevemosom.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9801/files/dafobiterasodanokagosi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/mugogugomoxiwadifenopuwuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/zijuxenirizanidip.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6808/files/54114007678.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/suzuzela.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_off0000e417.bin
309dfa0d213e599124fde9960f685b69462b45861bb5141e642bd31617017343
pdf-font-stream PDF embedded font (sfnt) at offset 0xE417 5352 bytes
font_01_sfnt_off0000f642.bin
a0aac27e9623e46a401689e3473d1f5ea2338921fb623a2b0b1641260c1e7609
pdf-font-stream PDF embedded font (sfnt) at offset 0xF642 10088 bytes