Malicious PDF — malware analysis report

Static analysis result for SHA-256 e220d10591f9ee63…

MALICIOUS

PDF

52.8 KB Created: 2020-08-19 02:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d60335750cc67ac4738c1231dc9268a SHA-1: 47999633d8c0029fad925c94467dfe6d52328ba7 SHA-256: e220d10591f9ee63d1e4060654e4371311784e8ebcba7c8cae7b149eebf404d8
152 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, a common tactic for SEO poisoning or phishing campaigns. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=formosan+aboriginal+culture+village+location'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other links, many pointing to Shopify domains, indicates a link farm designed to drive traffic to malicious destinations.

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=formosan+aboriginal+culture+village+location
    • http://files.ignitionnw.com/uploads/1/3/1/4/131406149/5390266.pdf
    • https://cdn.shopify.com/s/files/1/0435/5548/7905/files/69634622748.pdf
    • https://cdn.shopify.com/s/files/1/0431/5748/7778/files/51122710334.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/24167835207.pdf
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/26695198504.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4453/files/bayesian_analysis_with_python_osvaldo_martin.pdf
    • https://cdn.shopify.com/s/files/1/0430/3038/0698/files/15368601762.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/85058981260.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/gobojodamalitupunobejiz.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
stream_004_off000066ee.bin
a39b6b08f29a78ef35b8d509b59a0ed6a64216998669c8548cf4ed32d7e89e40
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x66EE 13000 bytes
font_01_sfnt_off00009085.bin
4b765917de5dbdd1f244402ac18a15cef652e8e1909cc6abcde65b6375b2282b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9085 5272 bytes
font_02_sfnt_off0000a268.bin
f9c0e628129457cde37737a75b969fedcea260cb5bb266f20ac86a8fad77c851
pdf-font-stream PDF embedded font (sfnt) at offset 0xA268 10548 bytes