Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca6e88d1e727429…

MALICIOUS

PDF

48.7 KB Created: 2020-09-03 13:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00e826a6134555d06e17c5811efcbb74 SHA-1: 543639865788b3c7191f1bc6fa1db57d9ea46e5c SHA-256: 4ca6e88d1e727429f0c86cd5d1922fe3451eb0f8d7df3613943ba805d318882e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.me'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to Shopify domains, one of which is also listed as an IOC. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or further malware delivery.

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.me/wix?keyword=delo+delo+banjara+song+free
    • https://cdn.shopify.com/s/files/1/0432/0860/5859/files/free_responsive_ecommerce_shop_bootstrap_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/6655024492.pdf
    • https://cdn.shopify.com/s/files/1/0440/5392/1957/files/neisseria_gonorrhoeae_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/jazipesemolib.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/77758305747.pdf
    • https://cdn.shopify.com/s/files/1/0463/4637/1229/files/napunabugeziwowuzap.pdf
    • https://cdn.shopify.com/s/files/1/0431/9543/3117/files/net_speed_indicator_internet_speed_meter_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/the_economist_july_2018.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/toresikakafedutura.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/57158178023.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/wuwazevubujawe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1639/files/birkenstock_logo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xamunodobesezuwenetubaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/1247/0422/files/80024282169.pdf
    • https://cdn.shopify.com/s/files/1/0436/1279/9138/files/telugu_bible_app_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/sewog.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/galefidupakadegukuridogix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4839/files/fifutebarivenid.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/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671d.bin
b83dc9196db72359686c7891b2a743007737d0ad868863093a9215c086abf695
pdf-font-stream PDF embedded font (sfnt) at offset 0x671D 4948 bytes
font_01_sfnt_off000077fb.bin
aa8fffb2558479a60b622608bbb519a665ba9ed2cf83cc230cf2c6efbe9743c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x77FB 14880 bytes
font_02_sfnt_off0000a592.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA592 4324 bytes