Malicious PDF — malware analysis report

Static analysis result for SHA-256 034fa17d5216abc8…

MALICIOUS

PDF

87.4 KB Created: 2021-07-16 10:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a792fd13ce02684539091e194ac48246 SHA-1: 1ff95c1d1b3b1ec5ea9a5b8f2b5ec5cf97216165 SHA-256: 034fa17d5216abc82bdebb7f532965199ca866a4f54125dfa7e8dce3ac292c20
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and extensive URL usage indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://laborke.ru/uplcv?utm_term=gdd+growing+degree+days PDF link annotation
    • http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16246454984699.pdfIn PDF document text
    • https://transport-vehicules.fr/userfiles/file/53590786584.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/498706dc06f32e2b0b9d353c7233909e/xodaromefodavibuburapab.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/feec8218b4b0dedb72dce9f2fdd32d2c/jodovuzarezezag.pdfIn PDF document text
    • http://agavietnam.com/img/files/67226189954.pdfIn PDF document text
    • http://mgocsm.in/userfiles/file/16475432382.pdfIn PDF document text
    • http://autohondl.cz/userfiles/file/bisonudan.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f9k5i9pep1ka7v4ca2c81e4jg6/85385754131.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e8d7b749a---nuseba.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/kekarilavotadatirijiw.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160857889a218b---xewimisogegigebu.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/073a39ca0c8669f4963fb88333a3e4d2/87404120399.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/j10d98ci76eh1h66cglcj13k87/56548682446.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/niselatosejij.pdfIn PDF document text
    • http://bioterapiazabiegi.pl/obrazy/file/lejepolile.pdfIn PDF document text
    • http://xn----8sbxab3abskk3a2j.xn--p1ai/media/file/zeruxari.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/0def67ea0bc2226b00391a5e618f62bf/zivixetixegaxeli.pdfIn PDF document text
    • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/zekadukikerotexiguboruj.pdfIn PDF document text
    • http://vorne-sitzen.eu/pcms/content/file/rapide.pdfIn PDF document text
    • http://studioarchperissinotto.eu/userfiles/files/5385915102.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfca71537e0---lerotiboxewokarokofotako.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607249b822d32---60529689909.pdfIn PDF document text
    • http://kassa.pl/userfiles/file/85542524563.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/xupuzun.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b19cc113ba9---nudizujabaketosipagakigur.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105EF 10520 bytes
SHA-256: e761d22916031f1ea2cf27b553265d1655945ea0d6a88a0eb9ad1d3bd94c1960
font_02_sfnt_off00011dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DDE 18512 bytes
SHA-256: 6f1f647c87ea4abfa6b5c3a9744dfdd2f214ca176692f01240d115079bffc22d

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