Malicious PDF — malware analysis report

Static analysis result for SHA-256 57966b8e1ead491e…

MALICIOUS

PDF

41.9 KB Created: 2020-08-13 18:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0184d3ff504542259acb6225c15e56a SHA-1: 8d5cab26c51afcde461e7a4dc25f938f766a5d6b SHA-256: 57966b8e1ead491e1dcf166c1377b26e24950b702a92cab218bce269d90d4b5d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at `ttraff.com`. The heuristic `PDF_MALICIOUS_REDIRECTOR_LINK` confirms this, indicating the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, as flagged by `PDF_SEO_LINK_FARM`, suggests a tactic to artificially inflate search engine rankings or distribute malicious content through a link farm. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wb?keyword=closer%20to%20freedom%20pdf
    • http://tulisafoj.scituatefoodpantry.org/uploads/1/3/1/4/131438667/ruxipeli-nufetu-lerivakemopu-nexofuw.pdf
    • http://wivemidum.collaborativecre8tions.com/uploads/1/3/1/4/131406062/firabomej.pdf
    • http://files.globalluxeventures.com/uploads/1/3/0/8/130813997/a2d321d45.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/86721267528.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/reluritumirogonukawetoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/whirlpool_duet_steam_dryer.pdf
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/xedoxupawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/acta_constitutiva_de_una_constructora_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/33038124508.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/kurifasupizomo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8837/files/dagoregupefekebewuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/28377988096.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/rimagefobituvizafobi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3920/files/xifusumizinomisive.pdf
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/gukeb.pdf
    • https://cdn.shopify.com/s/files/1/0440/4301/0213/files/church_administration_management.pdf
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/jepitubegow.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006452.bin
12b6c8248fa64dd8dabed07664d3542a6fbd914e54618f2e7ed531580cdf2d43
pdf-font-stream PDF embedded font (sfnt) at offset 0x6452 4884 bytes
font_01_sfnt_off000074d3.bin
b77f3ea29842feff8b0346ca99cb7c3a0ac6efb54f9643dd7757e44e4e36a8bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D3 10832 bytes