Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d59a48536c61941…

MALICIOUS

PDF

76.3 KB Created: 2021-02-22 09:04:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 038827d452bb88931f63411c48975e1f SHA-1: 4cedf98a8c9b5c9c829287098ff5e82ce907ffd2 SHA-256: 0d59a48536c6194102d7b27d6c1a6aa619a250c2282389ff46d5a830fbaf5ef7
126 Risk Score

Malware Insights

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

The file is a PDF with numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, potentially exploiting PDF vulnerabilities or serving as a lure for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=eric+worre+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467032/normal_601cf046820b0.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/Ozwhcif/xumabudugojutami.pdfIn PDF document text
    • https://badazunezibak.weebly.com/uploads/1/3/5/3/135338398/feboxizevox_xezaxu_worisuvijuri.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/2Lgeo9F/fios_tv_online_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/jchagi9/1761034368.pdfIn PDF document text
    • http://unosital.space/a_summer_lifeq989v.pdfIn PDF document text
    • http://lorutupaxuposu.22web.org/grand_crime_gangster_game_apkpure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369901/normal_5fec2eebbd748.pdfIn PDF document text
    • https://sowematawenuw.weebly.com/uploads/1/3/1/1/131164153/somokusufux.pdfIn PDF document text
    • http://allrecipes.pro/what_is_the_goal_of_a_thesis_statement_for_a_rhetorical_analysis3k4bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_5fd1be324835d.pdfIn PDF document text
    • http://instapriz.website/boot_camp_6_windows_10m2sbx.pdfIn PDF document text
    • http://winsbig.space/98336970182r4yxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371812/normal_601eaeace6a35.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/vezumobigodub/bujawuwikizore.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/runuxedasigis.pdfIn PDF document text
    • http://taperimogitunal.epizy.com/platicas_de_bautizo_en_linea_cdmx.pdfIn PDF document text
    • http://vulekagezefodek.rf.gd/90527246333.pdfIn PDF document text
    • http://pobikifi.rf.gd/96472509779.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/what_is_active_release_technique_chiropractic.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/wisoxiwojifapis.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
    • 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_off0000d9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FD 5020 bytes
SHA-256: a8113f9de8efa0e32c2ebb6ef8f39ab870de410ccfa101e7b134846a3298048d
font_01_sfnt_off0000eb3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3B 10300 bytes
SHA-256: e61878ef5fdb7675197f0900244e2c4b0c88fbfd8aa5abed759e807766c52bf4
font_02_sfnt_off00010eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECA 16080 bytes
SHA-256: 19cc87a61af1ffec9583344a7275f6d3812bd596e08e219237328c0503819c41

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