Malicious PDF — malware analysis report

Static analysis result for SHA-256 34d6567da0883bb7…

MALICIOUS

PDF

153.8 KB Created: 2021-02-07 22:22:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 169f6f802bc7d4c1308d4e78b79407f3 SHA-1: e32f3b8ea52c6e5eb14dcb243ef3405da9c14b1e SHA-256: 34d6567da0883bb76aafb8bf4bd549dd6ae43009ba3d4e2ce15e1bfacbcbf4ba
126 Risk Score

Malware Insights

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

The PDF document contains a high number of embedded links pointing to various domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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://baarspo.ru/aws?utm_term=que+significa+languidece+en+la+biblia PDF link annotation
    • http://cardioactiveitalia.site/neverwinter_testimony_of_the_braverrmni.pdfIn PDF document text
    • http://repair-monokoles.ru/522961541436ac83.pdfIn PDF document text
    • http://biomanix.best/69665441952e5dul.pdfIn PDF document text
    • https://tesewipelevifiv.weebly.com/uploads/1/3/3/9/133997178/dapofolo-metiredizusop-zozigufoson-wogorit.pdfIn PDF document text
    • http://topuniversityru.fun/dewiborib6ovm.pdfIn PDF document text
    • https://kaxojolomo.weebly.com/uploads/1/3/4/8/134885197/2135153.pdfIn PDF document text
    • http://allfreebets.ru/33652958904yofnz.pdfIn PDF document text
    • http://skywonder.space/lobiwixumaxetubupepo3dee.pdfIn PDF document text
    • http://bizawojumufa.22web.org/xamexiriwixaji.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/594565.pdfIn PDF document text
    • http://zootime.store/wujibogomakesoligamufa9yx5h.pdfIn PDF document text
    • https://fogevama.weebly.com/uploads/1/3/1/1/131164507/028754978f74a0f.pdfIn PDF document text
    • http://gedawirij.66ghz.com/3._03_lab_dichotomous_key_answers.pdfIn PDF document text
    • http://kukushka.space/92961950100by05i.pdfIn PDF document text
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/jubuxeduka_menotoj_setisodufu_gevunibokewodom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://risitikavaj.rf.gd/methyl_ethyl_ketoxime_technical_data_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21430 4984 bytes
SHA-256: faa4391884ff504ef71ae705574247dd8651a7a7c1d88c91b643b635f74fbc7b
font_01_sfnt_off0002252b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2252B 11984 bytes
SHA-256: a36c65d966d5b27a2fbdb0f136811bcb0021b501c5ec49b3f6ed16927a8c965f
font_02_sfnt_off00024b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24B59 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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