Malicious PDF — malware analysis report

Static analysis result for SHA-256 194f4265bd0eeb79…

MALICIOUS

PDF

58.9 KB Created: 2020-08-30 14:17:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6adb993947fa8425af16e409cb787437 SHA-1: 8e7768a2775a29ddd12001adf258b6502bf90c3d SHA-256: 194f4265bd0eeb79fa709116e65f74e39451f3851a2391bc1113317477946aa8
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though heavily obfuscated, contains text that appears to be a user manual title, suggesting a social engineering pretext. The presence of numerous external PDF links further indicates a link farm or redirection scheme designed to obscure the ultimate destination.

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/wix?keyword=bmpcc+6k+user+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/c5d40f_5597762f3f22430a83efdc513f8aaa51.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0bad03dd9e14df385d2d34b03e16fb8.pdf
    • https://static.usrfiles.com/ugd/0f5b72_1f1188d93f36410b945707edc5eaa44d.pdf
    • https://static.usrfiles.com/ugd/de65f7_79899ef2a2a5464795c52cfa7bea3e5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_6da63428f93e4d8aa7d384ada091b80b.pdf
    • https://static.usrfiles.com/ugd/4b7290_e0e80288a3f4471884925142ec59bfbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_4882addf254c45429f8ddd300ca1c29a.pdf
    • https://static.usrfiles.com/ugd/5e81b9_befa129cb36341b4b23a048d603602a5.pdf
    • https://static.usrfiles.com/ugd/225520_5667dd94f01c4f08a0b0db5504b9e8e9.pdf
    • https://static.usrfiles.com/ugd/c1615c_7eeaa50dc5854cae9030e57b2329d865.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1287/files/jedid.pdf
    • https://cdn.shopify.com/s/files/1/0430/9614/6073/files/58634666878.pdf
    • https://cdn.shopify.com/s/files/1/0438/1533/8144/files/video_player_premium_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/4223/3755/files/acting_emotions.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/91150474459.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/argumentative_essay_abortion.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/47196528.pdf
    • https://cdn.shopify.com/s/files/1/0431/4487/2085/files/animation-_fill-_mode.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a1d8.bin
aaebcad1a91fbe417b4222f042e061dde4dced411f56ce18092e1bfc3bc48e8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D8 5344 bytes
font_01_sfnt_off0000b3e8.bin
2def827e1dc3713ba85e625165c4631f40ad6d3b05fb2b1d8eb569c975dfe845		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3E8 13404 bytes

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