Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fdd8edd1bfffe65…

MALICIOUS

PDF

48.7 KB Created: 2020-08-14 22:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1e9b4c72acf0b5e5b9f4acd3e9fd440 SHA-1: c98932dd84e1b1f35a47ff0e37c7a24959a3ef2a SHA-256: 8fdd8edd1bfffe65d204f6f756886ce76b1bb018a6dcc86fd18170fd03d13610
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a direct link to a known malicious redirector at 'https://ttraff.com/pify?keyword=witcher+3+blood+and+wine+trophies+guide'. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to lure the user to click this malicious link. No scripts were extracted, but the PDF structure and URL analysis strongly suggest a phishing or redirection attack.

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=witcher+3+blood+and+wine+trophies+guide
    • http://files.blindpartsonlineaustralia.com.au/uploads/1/3/0/7/130738639/diwavinedifab.pdf
    • http://loxokuw.buddcreek.org/uploads/1/3/2/7/132712358/gazozunogulut-gaxutowego-gesofirinude.pdf
    • http://files.aspenridgeslavelake.com/uploads/1/3/1/3/131384573/2753184.pdf
    • http://wiwozi.nuovamarea.net/uploads/1/3/0/8/130814238/taxubabaragu_lenezotuliw_tofowixofabiza_vulojuregig.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/budazowaxufokox.pdf
    • https://cdn.shopify.com/s/files/1/0435/3212/4312/files/risugojupoxadi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/mabono.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewefezagabujam.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/jegipozanawabigudalokoba.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/94334200294.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/pokeguzotoxipivefedusawap.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/82054204716.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/78053446565.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/88346643153.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/english_synonyms_and_antonyms_for_bank_exams.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/bepapowawomuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/92862465112.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_off00008029.bin
97d1a0a69566647c3b9a648346cbc47f2346c6e65c243dd0f42b7874c843487d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8029 5744 bytes
font_01_sfnt_off000093c0.bin
f9fb4cce2df9259f8effd43f09aa5109548d5c59191224941d1e5b54f595e9f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x93C0 9968 bytes