Malicious PDF — malware analysis report

Static analysis result for SHA-256 40e5749e78659c5e…

MALICIOUS

PDF

48.0 KB Created: 2020-08-06 06:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06b5063b5cdffa1e81c0f46dd51bfc8e SHA-1: f5283fe90cf66a3bc165e10e088481c1cd8fa411 SHA-256: 40e5749e78659c5e2434248fb88471bd394ca70b9f1b07311ce4471f77a14d6b
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the target URL and other Shopify URLs, suggesting a lure to download a file. No scripts were extracted, but the presence of malicious links is sufficient evidence for this assessment.

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/pify?keyword=sashimi+waterfall+model+pdf
    • http://files.ftrs.ca/uploads/1/3/1/4/131437689/kowajej_vukibepojebudi_dojejajoke_kebitanikotelup.pdf
    • http://files.mosaic-home.com/uploads/1/3/2/7/132740700/womexojosugiv-buludevixusiz-pobiwuze.pdf
    • http://files.coluxy.com/uploads/1/3/1/4/131453283/e6009b7933.pdf
    • http://files.antlerbakingcompany.com/uploads/1/3/1/4/131482958/bavirowudizeguw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/labokobuwidojogazaviges.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2133/files/tekeligebogimagosomil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/75823895168.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/filarawobatuzozituna.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/42923239977.pdf
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/jimmer_fredette_salary.pdf
    • https://cdn.shopify.com/s/files/1/0434/6950/4662/files/sapomiwavenoduwozofabote.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/jenefafamazanaje.pdf
    • https://cdn.shopify.com/s/files/1/0433/8830/5575/files/39935661498.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/57582852822.pdf
    • https://cdn.shopify.com/s/files/1/0432/4740/3168/files/44766779391.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/wulejulomiboxuzipo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f5.bin
5064e899dda41c5418595c05f10750f93bd7137993445e6a880f40e1d83389bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x65F5 5476 bytes
font_01_sfnt_off00007879.bin
d7e3f4a30f532abef7ca5a9c36ecc15d8353473a6672042be5843078da12ad97
pdf-font-stream PDF embedded font (sfnt) at offset 0x7879 9936 bytes
font_02_sfnt_off00009aa0.bin
6707fe2711b8c63e24d82d96660c48a127736752a64a580c832bae0c2101bcdb
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA0 16924 bytes