Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cab20f2bdcc2d2…

MALICIOUS

PDF

72.4 KB Created: 2021-03-26 11:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2433e1061f78e58b778e0d1e6323b76b SHA-1: 091cb01e47c924bfce98c0c29c9933163d31243b SHA-256: 14cab20f2bdcc2d2f9080125286f3e603b6d0f546925a5be1f1109a0af152fff
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 threat. It contains numerous external URIs, with a primary one pointing to 'jumiwimov.ru', suggesting a lure to a malicious site. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates a pattern of hosting many links on disposable domains, reinforcing the phishing or malware distribution intent.

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://jumiwimov.ru/strik?utm_term=how+to+fix+whirlpool+dryer+thermal+fuse PDF link annotation
    • https://rogujodur.weebly.com/uploads/1/3/4/8/134899240/jakepojozemasinup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484609/normal_5ffb31832e089.pdfIn PDF document text
    • http://nemugub.mywebcommunity.org/ajay_yadav_anesthesia_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393625/normal_5fee84a1538ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448995/normal_6016b339c65fc.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/tofanajazikidufunafum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427086/normal_6028b3edc6e2c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409797/normal_5ffcd0f8208ef.pdfIn PDF document text
    • http://boketizabujig.scienceontheweb.net/pizajodisepifisizu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393889/normal_5ffdc7ae78d42.pdfIn PDF document text
    • http://zuwitirub.iblogger.org/the_republic_of_plato.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_6016e4320ac60.pdfIn PDF document text
    • http://dowosateti.iblogger.org/42313791097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446942/normal_601629cacca99.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/ab91397d2282896.pdfIn PDF document text
    • https://tozabofosizo.weebly.com/uploads/1/3/5/3/135340530/2687830.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xotopusedewix.myartsonline.com/wifojedaziru.pdfIn PDF document text
    • http://rolaxaja.rf.gd/descargar_antivirus_gratis_para_celular_android_uptodown.pdfIn PDF document text
    • http://senegowafev.epizy.com/96076281419.pdfIn PDF document text
    • http://jixopomud.epizy.com/bossypants_photos.pdfIn PDF document text
    • http://megoger.rf.gd/work_certificate_template.pdfIn PDF document text
    • http://xefujexomige.epizy.com/44561469112.pdfIn PDF document text
    • http://sugexure.rf.gd/how_to_reach_al_akir_platform.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_off0000df6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 5504 bytes
SHA-256: 3ae1d0734af9de607af5c8fcd7ab8038d0d93bc378246f9d9882cd7395dec30c
font_01_sfnt_off0000f214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF214 10004 bytes
SHA-256: b08110b5ce73da966da834ca60819d9d67f6dc397b746ae2676c370122dac67f

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