Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5d644760b72c47…

MALICIOUS

PDF

76.7 KB Created: 2021-03-30 05:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ba8aa993440839916b45508517519b91 SHA-1: 08b340488093f457ee0e0a57f87abb1999898f8b SHA-256: df5d644760b72c47ffdc480b0585569ff345b7356e3e43aabb8137cf75ad5670
126 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning model indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, midufefew.ru, which is likely used to host a phishing page or distribute further malware. The PDF structure and heuristics suggest it is a link farm designed to redirect users to potentially harmful content.

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://midufefew.ru/aws?utm_term=d%2526d+5e+unearthed+arcana+ranger+pdf PDF link annotation
    • http://sy0n.icu/mewazora5zt7.pdfIn PDF document text
    • http://wapajojakazewi.iblogger.org/make_cannelloni_from_lasagne_sheets.pdfIn PDF document text
    • https://juladuwupib.weebly.com/uploads/1/3/4/7/134763366/b760dc8fd2a64d0.pdfIn PDF document text
    • https://zinenefubodejig.weebly.com/uploads/1/3/4/3/134338026/sofukisev_godekaguvozejo_lerapol.pdfIn PDF document text
    • http://sulelufisumi.iblogger.org/dakesilusazevobumona.pdfIn PDF document text
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/ed643ccc01abfb.pdfIn PDF document text
    • https://zozisumuwukow.weebly.com/uploads/1/3/1/3/131380825/vovosivesa.pdfIn PDF document text
    • https://pazuvokase.weebly.com/uploads/1/3/4/6/134615635/9251599.pdfIn PDF document text
    • https://zazivobonapi.weebly.com/uploads/1/3/2/6/132696398/9661006.pdfIn PDF document text
    • http://ductsunlimitedins.com/doppler_de_arteria_cerebral_mediao95pp.pdfIn PDF document text
    • https://jamofidomub.weebly.com/uploads/1/3/1/3/131398059/xabisomoguvibux.pdfIn PDF document text
    • http://tidajipameme.22web.org/10547530415.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://uploads.strikinglycdn.com/files/9399f9c5-60fe-4ac5-965a-dbeddfe06673/13932916438.pdfIn PDF document text
    • http://turegipamikum.epizy.com/craftsman_25cc_weed_eater_parts.pdfIn PDF document text
    • http://xalobazinapirep.epizy.com/that_evening_sun_go_down_literary_analysis.pdfIn PDF document text
    • http://tolimimagag.epizy.com/33156296460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cfc9f84-fc97-4655-be53-8d41e11c1948/how_to_replace_battery_in_garmin_nuvi_2597.pdfIn PDF document text
    • http://lurozakilaxa.rf.gd/fujozuxelutuz.pdfIn PDF document text
    • http://wisubiko.rf.gd/how_to_draw_anime_body_boy.pdfIn PDF document text
    • http://fudojozijenabux.epizy.com/xegibosalaloposapudanalu.pdfIn PDF document text
    • http://xuperag.epizy.com/metformina_sandoz_850_para_que_sirve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e4af02-9d8b-4421-af2d-a808de706fea/26267035068.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81C 3484 bytes
SHA-256: b6bc3e761eca8ae26333d0367913862b9788f7109bed8a3dd2635371d897bba1
font_01_sfnt_off0000f388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF388 10612 bytes
SHA-256: c8a9618b7883ed06c0c433b8de10336948c46ce3c87b9cb13ca011b5521a6b9e
font_02_sfnt_off000117e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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