Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9fc9d5356e66311…

MALICIOUS

PDF

83.2 KB Created: 2021-02-24 23:28:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7b275488169d9852647244e4964b5f13 SHA-1: 24752a9d77d852d31aca61658137f5cfc91e1b50 SHA-256: d9fc9d5356e66311cdb4e356360eee80e723d2ca167d16805beb8a2b9ef7c5fd
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute further malicious content or phish users. The document body text is obfuscated and appears to be a lure related to search queries.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/award?keyword=is+gtx+970+good+for+vr PDF link annotation
    • http://favokumigo.iblogger.org/31060113918.pdfIn PDF document text
    • https://xudagemiribu.weebly.com/uploads/1/3/1/3/131378943/xanufep.pdfIn PDF document text
    • https://mipupupomekux.weebly.com/uploads/1/3/2/7/132712043/jemesaw_susenodavotixa.pdfIn PDF document text
    • https://fogunovavak.weebly.com/uploads/1/3/2/6/132681822/jelipemana-xuzaxijezobavos-xosibevemugel.pdfIn PDF document text
    • https://botoriki.weebly.com/uploads/1/3/2/6/132682976/1748763.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/52527044903.pdfIn PDF document text
    • https://pulapiselipatux.weebly.com/uploads/1/3/1/3/131378970/fisixizopatenew.pdfIn PDF document text
    • https://kivuxobusev.weebly.com/uploads/1/3/1/8/131871605/rakujujeposesu.pdfIn PDF document text
    • https://kotasixunepa.weebly.com/uploads/1/3/0/7/130776076/rogawak_gezujim.pdfIn PDF document text
    • https://wadonado.weebly.com/uploads/1/3/4/6/134677460/0ef0d.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/2014_jeep_cherokee_owners_manual.pdfIn PDF document text
    • https://neluposu.weebly.com/uploads/1/3/4/3/134369170/divefeperugogi.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/lalawewux.pdfIn PDF document text
    • http://begedotupatato.66ghz.com/31904997400.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dereduvate.epizy.com/nowewugiguzi.pdfIn PDF document text
    • http://pakoxerevigere.epizy.com/jekidar.pdfIn PDF document text
    • http://mirepili.epizy.com/south_movie_2018_new_hdvidz.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1F 5276 bytes
SHA-256: f99659f34bf446ad42eee5c0f83459d5799f581236253554462be3255b4788dd
font_01_sfnt_off00011c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C37 10476 bytes
SHA-256: df1ecee448f450103a2266dc32bc53434e28f2ad5d29432ec9aa48d18c78a4b2

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