Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c79b1e5353e375…

MALICIOUS

PDF

48.3 KB Created: 2020-08-07 20:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ae8b77a84cba6687d642a366cc03c1a SHA-1: ed98782408d68e71f6e6f8f2f9509f2816e86037 SHA-256: 06c79b1e5353e3757cf2d3c92a6b9e4ae00eef3c3a82bbdc94f7019a3c3dd6e8
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded URLs, many of which point to external PDF files hosted on Shopify. One critical heuristic indicates that the document links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs likely serve to create a link farm for SEO manipulation or to distribute further 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=ancora+ludovico+einaudi+pdf
    • http://files.redriverobedience.org/uploads/1/3/1/4/131437987/d7a458f3a.pdf
    • http://files.maeflower.net/uploads/1/3/0/8/130814397/gatedi.pdf
    • http://files.craigmckechnie.co.uk/uploads/1/3/2/6/132695986/7529544.pdf
    • http://files.lifted-queens.com/uploads/1/3/2/8/132814272/wumita.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2211/3192/files/48532930580.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdf
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/59637783782.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/9713966674.pdf
    • https://cdn.shopify.com/s/files/1/0430/9588/3925/files/muzagugadufana.pdf
    • https://cdn.shopify.com/s/files/1/0434/6091/9462/files/94690600180.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5078/files/fixetakisolefel.pdf
    • https://cdn.shopify.com/s/files/1/0430/1789/6089/files/39470489201.pdf
    • https://cdn.shopify.com/s/files/1/0433/4351/1702/files/roll20_wild_shape.pdf
    • https://cdn.shopify.com/s/files/1/0436/7984/2457/files/lujuragerigejaluvu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9439/files/megafomo.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_off00007dae.bin
96ba7728590771c5b4a31ad2d4c510db31dbb3f7cdf2f37710d76ad94504c9b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAE 5020 bytes
font_01_sfnt_off00008edf.bin
83229ce8fe181e80693f1fbe45ce6e4175c99b3b4848eddc3a6738bc4d445297
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDF 11716 bytes