Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a245345794f78b…

MALICIOUS

PDF

68.5 KB Created: 2021-02-14 15:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 27f2811efa88dd8ed3a8243b31394a63 SHA-1: bfc91adc45cffc6e05dc8356a64a817156ed0640 SHA-256: d7a245345794f78b35e5628441a55191a87e4c50359176a11e4b3918feb2ba07
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to 'bologen.ru', which is flagged as a link farm and potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=sbar+template+word+doc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386618/normal_5ff67663751ab.pdfIn PDF document text
    • http://nalapagized.22web.org/free_cricket_chirping_sound.pdfIn PDF document text
    • http://begedotupatato.66ghz.com/brothers_movie_whatsapp_video_status.pdfIn PDF document text
    • http://gifozuxozud.22web.org/awal_speaking_english_video.pdfIn PDF document text
    • http://folokuvatajaweg.22web.org/lipojawisuvejanajip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/grid-_template-_rows_auto_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/38756461301.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/jelakipufato.pdfIn PDF document text
    • http://wifexigupokot.epizy.com/game_center_ios_vers_android.pdfIn PDF document text
    • http://ruzoguniwu.epizy.com/69486298448.pdfIn PDF document text
    • http://fuxufotab.epizy.com/johnson_electric_holdings_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/jivufafakarafibibowo.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/wezexizetexor.pdfIn PDF document text
    • http://jiguluvosasibun.epizy.com/former_chief_of_air_staff_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/zamafololakulubumazizarib.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_off0000d3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D1 5376 bytes
SHA-256: cead0679689c7fd39a0347ff80b338422c5fd10e77ed714b8de696c19028223c
font_01_sfnt_off0000e612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE612 8968 bytes
SHA-256: f18a495afbecde2263cf4df08f0f46bf6c22737b87ac7d3391cf9f4ce93ec415

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