Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d1682e9c3b8a9aa…

MALICIOUS

PDF

44.1 KB Created: 2020-08-08 19:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f36aa3e04801ebe57c894a9d082b2d9d SHA-1: 59d1274c3adb46b3ace41c782bd98951741c1fb8 SHA-256: 6d1682e9c3b8a9aa901200f17bdbbc03e3d1e6b6226c45e1cc74fe3bf47cc2cb
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector to 'ttraff.ru'. The document body, though obfuscated, contains text suggesting a lure related to a pyramid scheme and includes the malicious URL. This indicates an attempt to direct users to malicious infrastructure, likely for phishing or malware delivery.

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.ru/pify?keyword=fortune+lies+at+the+bottom+of+the+pyramid+pdf
    • http://puketuko.alisonjerrydesigns.com/uploads/1/3/1/4/131406082/4109977.pdf
    • http://nudedawum.fit4lifepilateswellness.com/uploads/1/3/0/9/130969723/wakemugolegos-fanagaxirojo-gukem-mikug.pdf
    • http://files.theomrpa.com/uploads/1/3/0/9/130969357/f678f1d0.pdf
    • http://files.humblegritsales.com/uploads/1/3/2/6/132681767/dawebol-kilimoxo-bugox.pdf
    • http://files.authorcaseypeeler.com/uploads/1/3/0/8/130874431/5614299.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/79791375239.pdf
    • https://cdn.shopify.com/s/files/1/0447/7625/9735/files/calculus_by_thomas_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/4297374621.pdf
    • https://cdn.shopify.com/s/files/1/0431/5470/2496/files/27783044644.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/vomoxexafesabutozu.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/ejercicios_angulos_y_rectas_3o_primaria.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/3325401934.pdf
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/mufifazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/dictionary_of_archaic_words.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/89304836410.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/modojebebidaj.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_off00006daa.bin
223c6362072aebeda0369aeee721f812271a23e2c25ea44067217b83cd1a10b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAA 5476 bytes
font_01_sfnt_off00008024.bin
9e78255dbe36dfe3533996a95f70791bcb4c92e51f84c54a5aa5763ac56efa86
pdf-font-stream PDF embedded font (sfnt) at offset 0x8024 10304 bytes