Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c119ddfce08d8d3…

MALICIOUS

PDF

74.5 KB Created: 2021-03-13 23:45:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b9932025e2af29ac915fe0fab647ab4b SHA-1: b72e546b55708bafd3bb1cb631d50e7c3bd48d3f SHA-256: 3c119ddfce08d8d340cb289e0cba83b56038a179c43f2a0e46351afa7d14c961
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to wkhtmltopdf and date/time information, but does not provide clear user-facing content. No scripts were extracted from this sample.

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://midufefew.ru/strik?utm_term=how+do+you+use+a+mainstays+reed+diffuser PDF link annotation
    • http://lajulufubugo.22web.org/85178014784.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486984/normal_5ffbac6c7cf6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418755/normal_5fd3b33e80e6b.pdfIn PDF document text
    • http://junerajogulage.iblogger.org/the_art_of_japanese_joinery_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373004/normal_6021aae10adf3.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/nha7XZl/download_game_movie_director_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/leloxoreje/sifgcjd/42252727152.pdfIn PDF document text
    • http://guketaz.iblogger.org/temupo.pdfIn PDF document text
    • http://buwijuzaxavutek.22web.org/kuruxutimed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491705/normal_60472560e7a29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutepiguzusudax.epizy.com/karan_arjun_movie_hd_720p.pdfIn PDF document text
    • https://6fd4412c-3e6e-4f21-a9af-8137ffc6c0d9.filesusr.com/ugd/03469c_0cd0034f0cc24f4c97b60cf29ece2cc4.pdf?index=trueIn PDF document text
    • https://6b9ff03a-ef48-417a-a14c-919df0f903d0.filesusr.com/ugd/f459ea_bf072419a3df4ae09e5d17c7ad861026.pdf?index=trueIn PDF document text
    • http://dilikibabisud.rf.gd/7803733053.pdfIn PDF document text
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_b710cd8dcba247ceaa7be601aebe813e.pdf?index=trueIn PDF document text
    • http://zamasadexemu.rf.gd/les_neurones_enchants.pdfIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_c23e86aa38a6436f9f08709033097adb.pdf?index=trueIn PDF document text
    • http://dagajevefud.epizy.com/aashto_mechanistic_empirical_pavement_design_guide_2020.pdfIn PDF document text
    • http://vosimamasi.epizy.com/wavunamonoju.pdfIn PDF document text
    • https://e4586023-485a-43f1-9451-2d404684c5b7.filesusr.com/ugd/95ff22_3a338bc76e924133a77922355c486057.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/32123656031.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/animal_crossing_android_apk.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_off0000e6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BA 5176 bytes
SHA-256: 65f5ac75624381dc24e7a19480ce9ef551ba6d2105b11be0556d10297ee213a1
font_01_sfnt_off0000f852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF852 10764 bytes
SHA-256: 07abadb9052c57efffb02f479aeb751f8ff823008bfb2917596e2953545933b5

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