Malicious PDF — malware analysis report

Static analysis result for SHA-256 26e427566079bcb2…

MALICIOUS

PDF

34.7 KB Created: 2020-08-22 00:19:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5400d1afb0854fb2b465e0cbcb0a7c0c SHA-1: a169f0bb560534c4462ab1ae6f41f9856f757ea2 SHA-256: 26e427566079bcb275b8060532f30106302e3060a1b006b5595e73e3617d8d98
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to a URL that appears to be a lure for movie subtitles. The document body, though heavily obfuscated, contains references to the same URL and a large number of embedded PDF links, many hosted on Shopify, which is characteristic of a link farm used for SEO poisoning or distributing malicious content. The primary malicious URL is `https://ttraff.ru/pify?keyword=believer+korean+movie+english+subtitles`.

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.ru/pify?keyword=believer+korean+movie+english+subtitles
    • http://files.marilynreynolds.com/uploads/1/3/0/7/130738806/palimigenuruso-simavuzemukoros-tadoge.pdf
    • http://files.artisan-trails.org/uploads/1/3/0/7/130738806/doxolujanobugil.pdf
    • http://files.stmichaelsclovis.com/uploads/1/3/0/9/130969358/dojevav-magizopokodok.pdf
    • http://files.fernfarmcottages.co.uk/uploads/1/3/1/4/131437363/3148417.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lurexemip.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/lasigikagudanosikoxoser.pdf
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/xasupilotebuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2903/files/46541057398.pdf
    • https://cdn.shopify.com/s/files/1/0440/4209/2694/files/5743791217.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/paxunudutinimoleloxebejoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/67923410868.pdf
    • https://cdn.shopify.com/s/files/1/0431/9179/5873/files/bipisakositoxewa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/67425687157.pdf
    • https://cdn.shopify.com/s/files/1/0440/1525/5710/files/final_fantasy_x_blitzball_luca_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/stanley_lombardo_aeneid.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_off00004937.bin
cd4e45074d791ebd80cf722f25570f6019e655e1290557e5b400b69808bab1f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4937 5412 bytes
font_01_sfnt_off00005b7b.bin
0cb9d9b2594faf142d99ea6c0724c38bea59297d29346de8169f7c14f7866c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7B 10072 bytes

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