Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d605088696ed5c…

MALICIOUS

PDF

82.7 KB Created: 2021-03-14 08:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3221a1777a1abf9741a8955ea3deb781 SHA-1: 1723efa5b762c004c2f46bb92e0cc42a8dd830f6 SHA-256: 25d605088696ed5c36e8ebfda8ce01566112e40c035720c4d3e5359e770c7618
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links pointing to various domains, many of which appear to be disposable or used for SEO manipulation. The primary function seems to be redirecting users to other content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=little+red+riding+hood+song+in+horror+movie PDF link annotation
    • http://tupaxeguna.scienceontheweb.net/71080650316.pdfIn PDF document text
    • https://nipezititixi.weebly.com/uploads/1/3/4/6/134688951/jesupaparavob-loguduzagidali-gefinagisenil-josizupapen.pdfIn PDF document text
    • http://rujewazaxijaza.sportsontheweb.net/wisusojek.pdfIn PDF document text
    • http://xutifufaxe.mypressonline.com/gisopolepozamesegim.pdfIn PDF document text
    • https://zosojelukik.weebly.com/uploads/1/3/1/8/131871698/fa814c8be.pdfIn PDF document text
    • https://damajarulapo.weebly.com/uploads/1/3/0/7/130738748/96fd151753682.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/how_to_breed_moina.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/18737415167.pdfIn PDF document text
    • https://benejawu.weebly.com/uploads/1/3/4/1/134131543/56868ed9.pdfIn PDF document text
    • https://karomigotel.weebly.com/uploads/1/3/5/9/135962203/woritupebud-lolexora.pdfIn PDF document text
    • https://kokezixunilo.weebly.com/uploads/1/3/4/0/134096179/zugubak_surizalogetuma.pdfIn PDF document text
    • http://gixapedotamerow.mywebcommunity.org/21489109533.pdfIn PDF document text
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/bolis_kanasi_muwovabepidufor.pdfIn PDF document text
    • https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/90454a004a6.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://30621b86-6952-4b41-80af-4d24d830bc7c.filesusr.com/ugd/122077_36666e3e1cf54cbaae9af4c632d8e177.pdf?index=trueIn PDF document text
    • http://desigaweru.myartsonline.com/dipig.pdfIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_a0c48fbe2a3941c798a41b96e3ec9f21.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/a_link_to_the_past_gba_rom.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/karutamurexadadakadofu.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/97018464413.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/fusionner_fichier.pdfIn PDF document text
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_285d741ce45642bd95c19d831417a547.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xesigeze/all_my_sons_first_act_summary.pdfIn PDF document text
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_48267c5df998437d873317ef7a7b9dcd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/element_model_elefw328_screen_replacement.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_off0000f909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF909 4820 bytes
SHA-256: b65ad966cd3a52e5af423b9d936e11eb31432dbb7060830a53a974de4840ea3d
font_01_sfnt_off0001093a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093A 10940 bytes
SHA-256: 942661f2b7faf218911d91724a6d49897889cbcb11d89ac7624d97e63563bb58
font_02_sfnt_off00012eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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