Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe07851ab8a345c…

MALICIOUS

PDF

71.0 KB Created: 2021-01-24 18:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 127d7a033287d392cb34a118cdc999d1 SHA-1: e25c3f14cc6bd681535052b23315aa0f5d01c58b SHA-256: afe07851ab8a345c730b5e1396806475372a8d37819b306e08ba07177dad1d58
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains multiple external URIs, with one specifically pointing to a Minecraft APK lure, suggesting a social engineering tactic to trick users into downloading malware. The presence of embedded URLs and the link farm heuristic further support the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=minecraft+apk+ipad+mini PDF link annotation
    • https://cdn.sqhk.co/nezafomura/gjjieSq/nursery_rhymes_songs_for_babies.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/oMja2VE/facebook_local_network_access.pdfIn PDF document text
    • http://kind-insta.site/bird_racing_simulator_eagle_race_game9zlgq.pdfIn PDF document text
    • http://wonnaturila.space/connect_the_dots_online_gamebv94s.pdfIn PDF document text
    • http://kigazuvunawolux.iblogger.org/chronic_obstructive_airways_disease_treatment_guidelines.pdfIn PDF document text
    • http://physcoo.com/retrograde_pyelogram_proceduretsqmh.pdfIn PDF document text
    • http://kelnoteres.xyz/diep._io_best_tank_for_2_teamsv3icp.pdfIn PDF document text
    • http://swiss-gear-top.xyz/hide_and_seek_fortnite_lachlanr89lh.pdfIn PDF document text
    • http://app-3null.com/diy_paper_craft_ideas_easy_paper_flowers_2019f6tfl.pdfIn PDF document text
    • https://cdn.sqhk.co/pumevigatare/fibeWgd/36120440673.pdfIn PDF document text
    • http://vbruti.site/54150561983uww25.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilajib.epizy.com/vosasamalegejukoxenatude.pdfIn PDF document text
    • http://zitejilid.epizy.com/bavageviposexuwarepavot.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/b._ed_application_form_in_gujarat_university.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/chancery_guide_application_bundles.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8ED 5160 bytes
SHA-256: 0d5af22a790b8ddc78dee06dc6f93930a59d3b6c620e0f76679d726d6dad1cea
font_01_sfnt_off0000ea7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7A 10804 bytes
SHA-256: 4dc2d65a9e7784a8381efce401c493a8f5e8a9c635f0fd25da28cce5e94b64d0

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