Malicious PDF — malware analysis report

Static analysis result for SHA-256 165cec830126c176…

MALICIOUS

PDF

42.4 KB Created: 2020-08-08 08:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: daea0cb3bb2b58ca9406cc9d001cc50a SHA-1: 2589ccc4311ab445d239ee1c3ca543f32d11d440 SHA-256: 165cec830126c176b83d54063485093a2b543ac91b1a582ce6d4f94447114fa3
162 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 Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. Crucially, one embedded URL, 'https://ttraff.ru/pify?keyword=criminal+law+1+reyes+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=criminal+law+1+reyes+pdf
    • http://files.stellarinternationalnetworks.com/uploads/1/3/1/0/131070912/vevemalazux.pdf
    • http://files.suzannequigleycopywriter.com/uploads/1/3/0/7/130776745/8400120.pdf
    • http://fogob.misswaggaquest.com/uploads/1/3/0/9/130969060/b4f9d696c8be.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/bsc_courses_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/25098823856.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/defafadomenapalemu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.pdf
    • https://cdn.shopify.com/s/files/1/0440/3052/5590/files/warhammer_40k_8th_edition_ork_codex_vk.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/rosolese.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/43313623895.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/lapowawerifasevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/deublin_rotary_union.pdf
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/lasigagomutaxefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7609/files/bapimafonexawo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/zapuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/8908/4068/files/61031155192.pdf
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/67664015230.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_off00005a9e.bin
7138205c18b2291ab55fdae3959921c3fed6d1cb2ae32c0ca8f6d8a05b38bbf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9E 5052 bytes
font_01_sfnt_off00006bbb.bin
bbb9cb3797f1c9093fad2c7ffc8a14be4c980833bcfd43dd7cdac43148efa16f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBB 10124 bytes
font_02_sfnt_off00008e65.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E65 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.