Malicious PDF — malware analysis report

Static analysis result for SHA-256 3afc7c6ae17474bf…

MALICIOUS

PDF

77.0 KB Created: 2021-03-13 19:18:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 4ef31b4481dbdd4e4cd79c68e126b643 SHA-1: a4efb1546cfa652f33f557dc942d74b94f518dde SHA-256: 3afc7c6ae17474bf7401451db30c9d52483d674cf08721251fabe37597bb7786
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, suggests a lure related to 'Suzuki ertiga 2020 specs pdf', likely to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/award?keyword=suzuki+ertiga+2020+specs+pdf PDF link annotation
    • https://regurawuxafedan.weebly.com/uploads/1/3/0/7/130740517/muzabov.pdfIn PDF document text
    • http://eferevole.com/rofuxunudidejekagtoqxk.pdfIn PDF document text
    • http://kafofal.mygamesonline.org/jawbone_up3_app_store.pdfIn PDF document text
    • https://cdn.sqhk.co/nozujeraguje/13Bhagi/36812692621.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/jcigcig/68005761398.pdfIn PDF document text
    • https://cdn.sqhk.co/vifutetax/Rqihaif/nozewarajora.pdfIn PDF document text
    • http://xariketixagat.mypressonline.com/78228717210.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/58b496a31b11331.pdfIn PDF document text
    • https://cdn.sqhk.co/nivodoruw/5KllMgR/dudimamamifutosasofixizo.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/gebeloni8h1e3.pdfIn PDF document text
    • http://universal-kirov.ru/rubefigizolixiduiqstl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415524/normal_6046fdd650718.pdfIn PDF document text
    • http://naturaleone.space/dolphin_emulator_pc_freeh75vw.pdfIn PDF document text
    • https://fobafomenizu.weebly.com/uploads/1/3/4/7/134753661/pekowirematawe-rivepewixaze-zuwol.pdfIn PDF document text
    • https://cdn.sqhk.co/kupovite/idDK7h1/screaming_bird_meme_west_virginia.pdfIn PDF document text
    • http://zuregazezoral.mygamesonline.org/case_study_of_apartment_design.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/dream_interpretation_dog_bite_arm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469359/normal_604cb5d2b0201.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/vapelurowar/private_sector_clerks_award_pay_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/abstract_page_mla_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/ableton_live_sampler.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/batman_death_in_the_family_movie_where_to_watch.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEE 5784 bytes
SHA-256: 8c87338a7aa8d23de5c43d25eaa1b389f2d0a14c9f9b0707bb865f1bf8e6403f
font_01_sfnt_off000102bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BC 10428 bytes
SHA-256: 73d9a2c944b0b2b331c35caabd7065acf5108222299c317eda64243052baa119

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