Malicious PDF — malware analysis report

Static analysis result for SHA-256 3413cfefd0862833…

MALICIOUS

PDF

77.0 KB Created: 2021-03-11 20:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4a8f54af4bf71e8d28322d38681c613d SHA-1: dca4d1d45d1d2a2c07a518be8c0cd9b73672c890 SHA-256: 3413cfefd0862833e87d1c328c5bf7b80d198d9a32d043a9d176c3c48545dcee
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, and ClamAV detects it as a phishing trojan. The document presents a deceptive title related to Islamic education but functions as a link farm, directing users to numerous external URLs, some of which are hosted on disposable domains. The primary purpose appears to be to redirect users to potentially harmful content through a large number of outbound links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/strik?utm_term=brief+history+of+islamic+education+in+nigeria PDF link annotation
    • http://microbladingeyebrowsdallastx.com/rainbow_loom_instructions_with_pencilsq5ijz.pdfIn PDF document text
    • https://zatagigozot.weebly.com/uploads/1/3/0/7/130775916/wujatixera-mokilazofaf.pdfIn PDF document text
    • https://valezofijamope.weebly.com/uploads/1/3/4/4/134445284/najiwivodigetopav.pdfIn PDF document text
    • https://sonujeti.weebly.com/uploads/1/3/0/9/130969686/e88c3347fcd5.pdfIn PDF document text
    • https://guwevene.weebly.com/uploads/1/3/1/4/131437413/6b520.pdfIn PDF document text
    • https://biwoxigaluna.weebly.com/uploads/1/3/2/6/132681579/142ee848e9fd20a.pdfIn PDF document text
    • https://lupilonugugi.weebly.com/uploads/1/3/1/6/131637558/pebojadenovega.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/panewamexowos.pdfIn PDF document text
    • http://save50it.info/65987656129l8ban.pdfIn PDF document text
    • https://cdn.sqhk.co/xafumeko/ghghhde/bhopal_shatabdi_12002_platform_number.pdfIn PDF document text
    • https://zesefoposijun.weebly.com/uploads/1/3/4/6/134672262/fdc35373342517.pdfIn PDF document text
    • https://juxejiwivila.weebly.com/uploads/1/3/4/7/134713499/d16cfaa471296.pdfIn PDF document text
    • https://rajiketuwomap.weebly.com/uploads/1/3/5/9/135957261/vebixakafabi.pdfIn PDF document text
    • https://cdn.sqhk.co/bagudivibi/dji8Ep3/cakewalk_software_free_full_version.pdfIn PDF document text
    • https://gemiporelowagi.weebly.com/uploads/1/3/0/7/130775846/gutorawo.pdfIn PDF document text
    • https://cdn.sqhk.co/pawanipol/Zhggfid/vimekebikutita.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df1b037-09e1-451e-9116-55bc2122a89d/para_que_se_utilizan_las_lineas_de_tiempo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b36ac53-64bd-402a-9c65-102fafee02cd/wenugosiwoposujidor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a589915d-f709-4309-b92b-2c522909b8e1/how_to_install_bosch_slimline_integrated_dishwasher.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_off0000ef67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF67 5584 bytes
SHA-256: 42545b44b2f6527e0b71a3a8f3701a1bcc2785e9d2ab6dab0fdc10caab33b9c4
font_01_sfnt_off00010248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10248 11176 bytes
SHA-256: 90445913a2616800af7723294fe0cb0d4fc6f7ee558fbe5903080cb80fddcdcc

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