Malicious PDF — malware analysis report

Static analysis result for SHA-256 592bfd73e82418dd…

MALICIOUS

PDF

37.6 KB Created: 2020-08-17 12:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c35855f698c4a54bfdf7a72d463a8b71 SHA-1: 28bd31458795919261fd0f8704037ea8de4eddfb SHA-256: 592bfd73e82418dd068fe7953a8f49fa7849169c5a409ccb4156897239f53215
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=beretta+92fs+inox+stainless+steel+guide+rod', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous external links, many pointing to Shopify domains, indicates a strategy to manipulate search engine results or distribute malicious content through seemingly benign documents.

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=beretta+92fs+inox+stainless+steel+guide+rod
    • http://files.gurtons.com/uploads/1/3/2/6/132683264/jisuv.pdf
    • http://files.chefdavidbmorrison.com/uploads/1/3/1/3/131398224/5779367.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/51455792016.pdf
    • https://cdn.shopify.com/s/files/1/0432/2315/4847/files/air_pollution_effects_on_plants.pdf
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/68997823884.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/5815185758.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/duxobubid.pdf
    • https://cdn.shopify.com/s/files/1/0436/4032/4256/files/14887622971.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/zufidotonakasu.pdf
    • https://cdn.shopify.com/s/files/1/0448/1040/4000/files/calligraphy_exercises_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/share_market_basics_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/atomic_structure_class_8.pdf
    • https://cdn.shopify.com/s/files/1/0428/7892/7011/files/proyecto_de_tesis_unalm.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/setajojekakal.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/64314686189.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_off0000453b.bin
924233531a0ed43b8122edc65612c48212c30c42f9bac1b79082a03d8a7e06b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x453B 5360 bytes
font_01_sfnt_off00005788.bin
f7060f7d45e8f0feba0a1b189e179595aad23fb8563e12bf3b2c770109c4c972
pdf-font-stream PDF embedded font (sfnt) at offset 0x5788 9852 bytes
font_02_sfnt_off0000793f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x793F 4324 bytes