Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95302edb130ac47…

MALICIOUS

PDF

83.3 KB Created: 2020-11-26 08:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7b0ef73249d8b5695b6c9a03dbc3427 SHA-1: d3eb1fc2cd5bfaaed773c5753878506b609c9e1b SHA-256: d95302edb130ac479479b0d6d1f1989e46184365940f9fd1bae13d2d12669b4d
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a common tactic for phishing or SEO spam campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' suggest the document is designed to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=how+many+feet+in+200+fathom
    • https://cdn-cms.f-static.net/uploads/4389387/normal_5f91463a70075.pdf
    • https://boruwimuruliv.weebly.com/uploads/1/3/4/8/134875556/bufomup.pdf
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f86fee906a02.pdf
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5fad594c798d6.pdf
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/xowalupewe.pdf
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5f8e804ca7998.pdf
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/fonilan.pdf
    • https://xejibojap.weebly.com/uploads/1/3/4/3/134310503/topevenikefal-fimikokeworiju.pdf
    • https://zasetumodoroba.weebly.com/uploads/1/3/4/6/134692621/5284713.pdf
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/0360ded1be14.pdf
    • https://cdn-cms.f-static.net/uploads/4374704/normal_5fbb87489a623.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xedewofuretujo/94180734457.pdf
    • https://s3.amazonaws.com/henghuili-files2/62444440193.pdf
    • https://uploads.strikinglycdn.com/files/e5426cf7-77a2-4eb7-9def-214bdd3b1e97/95149255848.pdf
    • https://s3.amazonaws.com/donukadizolin/dovakojoj.pdf
    • https://s3.amazonaws.com/fopalew/watch_the_meg_online_free.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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000e89e.bin
04f40e2e714460136d8275446545fcd0ee4a7076d4196528749d9de2953a5825		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE89E 15516 bytes
font_00_sfnt_off0000d73e.bin
60acc610bef7031fd4713125f7b461526973b6743fa2a8b838a9a43130fdc87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD73E 5132 bytes
font_02_sfnt_off000113c5.bin
49da184ffc1e1aa254e01b63332ae19d3dbcc4ef9ba0b0c3cebb9beaae1342b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113C5 13952 bytes

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