Malicious PDF — malware analysis report

Static analysis result for SHA-256 197deeb37f15b00f…

MALICIOUS

PDF

66.4 KB Created: 2020-08-25 02:23:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c19dcc76f8605bf1600da0c49aee8dce SHA-1: 40990347cfa7e02909aa3a29dfd7756b1af686ce SHA-256: 197deeb37f15b00f80d02441a5ecb48145b32fd8ad1b5968371a03c40fa3bc00
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external resources, and one specific URL, 'https://ttraff.ru/pify?keyword=battleon+farming+guide', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to trick users into clicking it for a 'farming guide'. No scripts were extracted, but the PDF structure and link farm are indicative of a phishing or malware distribution attempt.

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=battleon+farming+guide
    • http://lamefebe.victorygamers.org/uploads/1/3/2/7/132740405/kusuzamaxirewoze.pdf
    • http://todifa.narragansettsurveyors.org/uploads/1/3/1/0/131070872/9147423.pdf
    • http://povazul.ggsdesigns.net/uploads/1/3/1/0/131070197/464d6b545b02a1b.pdf
    • https://adventurequestwiki.fandom
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/libro_agenda_pequeo_cerdo_capitalista_2020_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/getenalogobim.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/ielts_speaking_actual_tests_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/lupubejafewuzokafeboxog.pdf
    • https://cdn.shopify.com/s/files/1/0437/3449/9479/files/levemividexujasili.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/83417255454.pdf
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/wiwalalaraxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7034/8694/files/list_of_important_days_in.pdf
    • https://cdn.shopify.com/s/files/1/0432/9934/0448/files/rizuxilevaruludiguj.pdf
    • https://cdn.shopify.com/s/files/1/0463/6396/7643/files/wow_classic_warlock_leveling_guide_icy_veins.pdf
    • https://cdn.shopify.com/s/files/1/0437/8676/4446/files/udp_tracker._thepornvilla._com_6969_announce.pdf
    • https://cdn.shopify.com/s/files/1/0432/8452/9310/files/zotafim.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000baf9.bin
14bc4298803a4068826bf277518471352a53afd52615f3e9bbc8832e789f047f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF9 4980 bytes
font_01_sfnt_off0000cbcf.bin
adaf731529a40c478e24562262706a2f4cff181f7ae2893eaefc7d98549bcbf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCF 10296 bytes
font_02_sfnt_off0000eeb3.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB3 4324 bytes

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