Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b39e27394b2487…

MALICIOUS

PDF

75.5 KB Created: 2021-03-09 23:56:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e29ae2c439f288a90accc8b88e554b2e SHA-1: e6eaceb30e3f5f2c4faa1609b4d6aab5c3c7d4b5 SHA-256: f5b39e27394b248784ea2cade66f0e2c35504c3ff4d3bb679db80f50429ab60c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/123?utm_term=android+phone+google+maps+offline PDF link annotation
    • http://iranomics.com/xesozinobelhmpg.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/38371859080.pdfIn PDF document text
    • http://tixshopclub.fun/xoxisifizegrojki.pdfIn PDF document text
    • http://national-verifyteam.com/adhd_medication_guide_20194fne4.pdfIn PDF document text
    • http://1xbet-registr.site/90079717712rtjls.pdfIn PDF document text
    • http://datulosuwila.iblogger.org/52110582504.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://womawujun.atwebpages.com/potassium_nitrate_strong_or_weak_acid_or_base.pdfIn PDF document text
    • http://kazaxese.epizy.com/66944237089.pdfIn PDF document text
    • https://d2d87fd5-5f4d-49aa-ab3c-2263ce4b5d22.filesusr.com/ugd/9169d2_fcb8028bd5e64c64ab395225b658459f.pdf?index=trueIn PDF document text
    • http://dawutanarav.epizy.com/ibps_guide_lic_aao_capsule.pdfIn PDF document text
    • http://kojumajofub.rf.gd/beverly_hills_chihuahua_movie_in_tamil.pdfIn PDF document text
    • http://rilefijej.epizy.com/casio_sea_pathfinder_watch_manual.pdfIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_b3e368c19e9749748886c07f77addd51.pdf?index=trueIn PDF document text
    • http://kalumewuvo.rf.gd/how_to_solve_for_time_in_radioactive_decay.pdfIn PDF document text
    • http://jevoxomififewi.epizy.com/52077307841.pdfIn PDF document text
    • http://rasiritodir.rf.gd/bollywood_all_old_video_songs.pdfIn PDF document text
    • http://bikutuvuxaxixo.epizy.com/80704396615.pdfIn PDF document text
    • http://fafovinipola.epizy.com/58207024582.pdfIn PDF document text
    • http://nujemapamonaj.epizy.com/from_dusk_till_dawn_film_analysis.pdfIn PDF document text
    • http://ruwapebubori.epizy.com/33185393150.pdfIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_efa8a7402dbb472a8a7bc3d239514782.pdf?index=trueIn PDF document text
    • http://zevofelajasuz.epizy.com/fda_serious_adverse_event_reporting_guidelines.pdfIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_5a05de2dd560470cbe12777c2455b6eb.pdf?index=trueIn 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_off0000e9d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D4 5444 bytes
SHA-256: 8185c4f7e5a8eaf30b2a141a0c1f82faa06e5be610453a8359b632f7b22647e2
font_01_sfnt_off0000fc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2C 10672 bytes
SHA-256: fc9a130e0f38b877af5aa24e239e0b649634545e657578c9e1d0e9322ba4bd06

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