Malicious PDF — malware analysis report

Static analysis result for SHA-256 094fd030a0809d14…

MALICIOUS

PDF

94.4 KB Created: 2021-03-05 21:39:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 8ffadc40f1b209d3de313f316b39f35d SHA-1: 25993a786af69c9d8992a6b9407fcdcb7bb9fed1 SHA-256: 094fd030a0809d140491c65e3fae84c853dcd31520275d05d05df1d4e498b0b9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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=super+smash+brothers+brawl+characters+list PDF link annotation
    • https://cdn.sqhk.co/kinibemazoz/2hjZe5X/good_skins_for_minecraft_pe_download.pdfIn PDF document text
    • http://instapresent.site/kali_linux_nethunter_apk_apkpure6xlb2.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/bSC82zS/ice_cream_colouring_pages.pdfIn PDF document text
    • http://vuzitofakomuj.22web.org/70954247421.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_6012470a53065.pdfIn PDF document text
    • https://cdn.sqhk.co/puberufibo/pgiihjc/carnival_cruise_careers_work_from_home.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_601dd503e9800.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464850/normal_603dc9e68838c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456114/normal_5fff15631ba5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393755/normal_600de7715c9d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5fd1c7431d3e2.pdfIn PDF document text
    • http://hookup154.site/origen_of_alexandriag3i2s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_600d0216d5b01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390382/normal_600a263e6a683.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/hd8hjig/buvogutufefugorivonifugig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470553/normal_5ff55176134c0.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
    • https://s3.amazonaws.com/gavapozalilup/binipigiv.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/dell_mouse_km632_driver_windows_10.pdfIn PDF document text
    • http://vavogave.rf.gd/51189471041.pdfIn PDF document text
    • http://diwejijozijigez.rf.gd/antutu_benchmark_app.pdfIn PDF document text
    • http://lipewax.rf.gd/iupac_nomenclature_practice_exercises_with_answers.pdfIn PDF document text
    • http://liwumulexajuvi.epizy.com/mabozikujolepi.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/badges_of_fury_tamil_dubbed_movie.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D8 4476 bytes
SHA-256: 067835530ce8cdc9e1ed1f958927995110aac3659010acbb3995bf939bc757b9
font_01_sfnt_off00012689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12689 5284 bytes
SHA-256: 5dadab4968b53f97e88850d00cc73f1fd53cb37e2587e2e22d42618fcdbe33ca
font_02_sfnt_off00013888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13888 10884 bytes
SHA-256: b41b3578694c68b20d1fa96b0dca11dac2474d0a0c9ca2ed3bb6c9299666dff8
font_03_sfnt_off00015d80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D80 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34