Malicious PDF — malware analysis report

Static analysis result for SHA-256 8410c1288dfbad61…

MALICIOUS

PDF

59.0 KB Created: 2020-08-07 06:17:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afc401afc179aa4ade8d9b4ff7c033bc SHA-1: e154dcc90b0be12fb838cf95ba8582c9d4c2ff41 SHA-256: 8410c1288dfbad61a8f7ec8c7691c330215c0b649a1243f7cd63f7d34b323279
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains a URL that appears to be a search query for educational materials, suggesting a lure. The presence of many external PDF links indicates a link farm, likely for SEO manipulation or to host further malicious content.

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=collins+cambridge+checkpoint+english+coursebook+8+answers+pdf
    • http://files.bozemanhelpcenter.org/uploads/1/3/1/4/131437636/6230845.pdf
    • http://files.ncaaop.com/uploads/1/3/0/8/130874128/walanepa-jowisevikojen-pudufinimup-nuwebupudakun.pdf
    • http://files.carolinethew.com/uploads/1/3/1/0/131071196/telowodinezi.pdf
    • http://bedog.kinosaurusjakarta.com/uploads/1/3/0/7/130739625/8912208.pdf
    • http://files.anticamodern.com/uploads/1/3/1/3/131383821/59237c08e18.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/ritikig.pdf
    • https://cdn.shopify.com/s/files/1/0433/9089/4247/files/drake_still_here_listen.pdf
    • https://cdn.shopify.com/s/files/1/0431/0099/5741/files/teaching_argumentative_writing.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/sample_mp4_video.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/jowupekalorenenukakixapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/wexasexobox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0434/5089/2454/files/buxikufasubexil.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/22307537084.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/23848535757.pdf
    • https://cdn.shopify.com/s/files/1/0430/5666/0633/files/2366721841.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_off00009fd9.bin
e9709cd03765a8bded2ce1667420942d16a3a103d759c4add9a2f0e50dfd94b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD9 5964 bytes
font_01_sfnt_off0000b3fe.bin
fe2c5ed4315bc75b5b8a529b2482c86e28e3b936f16f7d991159a834ccce640f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3FE 13208 bytes

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