Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65662cd1fca079c…

MALICIOUS

PDF

67.9 KB Created: 2021-03-01 00:58:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c6f3ca6af8bd0703c204f228de0b2d2b SHA-1: dbd630ef57f0e55daa3f104f0c89b87b3e4cfbd3 SHA-256: a65662cd1fca079ccd26f077ca6a4eceaa9aa69d79b8690c9474f652aca934f5
186 Risk Score

Malware Insights

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

The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content or phishing sites. The presence of embedded URLs and the PDF structure strongly suggest it's intended as a lure, likely delivered via spearphishing.

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://jacksth.ru/aws?utm_term=panasonic+phone+headset+mode+turn+off PDF link annotation
    • http://lemakomude.sportsontheweb.net/sofizevorewof.pdfIn PDF document text
    • http://eeeeeyyy.space/venus_in_transit_ielts_reading_answer_key5i792.pdfIn PDF document text
    • https://bonuwokepav.weebly.com/uploads/1/3/4/5/134592975/bozolemi.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/jijezuxilun.pdfIn PDF document text
    • https://mesasijodise.weebly.com/uploads/1/3/5/3/135315214/8c38b861dcdd605.pdfIn PDF document text
    • http://miwewumexurigan.sportsontheweb.net/21121280147.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/real_analysis_notes.pdfIn PDF document text
    • https://xizirujikalowev.weebly.com/uploads/1/3/1/4/131454807/140fcbe580fb9.pdfIn PDF document text
    • https://finazevad.weebly.com/uploads/1/3/0/7/130739247/bawofi-mufajinoragujan-teramofulub.pdfIn PDF document text
    • https://dolilufaxeni.weebly.com/uploads/1/3/2/6/132683246/ada1f2b8074.pdfIn PDF document text
    • http://zdsshop.top/totidojuzogijotpadem.pdfIn PDF document text
    • https://wupupuredizuso.weebly.com/uploads/1/3/4/8/134894828/wugarufumiduf_rolejiz_rasobisago_xisarejufego.pdfIn PDF document text
    • https://kaneloko.weebly.com/uploads/1/3/1/4/131408798/8658085.pdfIn PDF document text
    • https://sasozepawises.weebly.com/uploads/1/3/4/3/134315695/petix-dabunefogereneg.pdfIn PDF document text
    • http://perevod24-card2card.site/polaroid_iso48_sd_card_error6ajai.pdfIn PDF document text
    • http://salleapp.xyz/22631688222zam6q.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/buponuwebi/edconnect_installation_and_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/zovukemener.pdfIn PDF document text
    • http://magegefopo.atwebpages.com/where_to_find_serial_number_on_ezgo_rxv_golf_cart.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/saregunipupikezeruvemat.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_off0000ce5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5A 5364 bytes
SHA-256: 73a7ab2a41f706ebc362caa5cd4e4a91f6ff516bd87fef754a25edb8c734107f
font_01_sfnt_off0000e06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06A 9744 bytes
SHA-256: eb1abb3369c4e8da4709452574ea09b1573f78cd400dc8a7a1996a2b63809d1e

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