Malicious PDF — malware analysis report

Static analysis result for SHA-256 f53548a183bf6fd8…

MALICIOUS

PDF

78.7 KB Created: 2021-02-27 17:59:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2500ade1eaebeb324ea7fc19e399a606 SHA-1: 27e06df8da3cf82b0ffe9c8996196eba3f5a61db SHA-256: f53548a183bf6fd8b0e161de48372d5663e5837082dd8ce636a14896a8a0bda5
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are consistent with attempts to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/award?keyword=how+to+repair+whirlpool+oven+control+board PDF link annotation
    • http://slimitalia.space/gejijuzosinirabatapezxce1.pdfIn PDF document text
    • http://vabenawak.iblogger.org/55903584610.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487007/normal_60304c73b3682.pdfIn PDF document text
    • http://itfamily.pro/91955269345h7hyy.pdfIn PDF document text
    • http://getsol.xyz/91045693250wd4sf.pdfIn PDF document text
    • http://world-wildshop.com/motorcycle_diaries_trailer_deutschplqt1.pdfIn PDF document text
    • http://testertumentum.space/kakujomh0bpi.pdfIn PDF document text
    • https://zimuvudiredefux.weebly.com/uploads/1/3/2/7/132710782/4341590.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488572/normal_5fdd456049590.pdfIn PDF document text
    • http://markettop.pro/kawuvosesuvinigosasapua32d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_6033e96d17f0b.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/Xu1UXgf/mimuziruravezigegesosamow.pdfIn PDF document text
    • http://hamsterbig.com/gabomaxoij6l.pdfIn PDF document text
    • http://fitdieta.com/77789882689f5vxp.pdfIn PDF document text
    • https://vasuwogi.weebly.com/uploads/1/3/4/0/134017955/jimof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459623/normal_5ffa13df84ae2.pdfIn PDF document text
    • http://websporizlehd.com/buzizuzavuud7ap.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/jghbigv/9746917798.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/ehgiwji/atom_zombie_smasher_soundtrack.pdfIn PDF document text
    • https://sekilulijafos.weebly.com/uploads/1/3/1/4/131438177/1688353.pdfIn PDF document text
    • http://tevajevidiwa.22web.org/rudikebixizi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gawejufabobepi.epizy.com/pencil_brush_illustrator.pdfIn PDF document text
    • http://pidusuzelaju.epizy.com/bpmx_earnings_report.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_off0000ecd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 3052 bytes
SHA-256: 5a7cd7230ee1fb6378fc94961bac06d7dbdba5a6213181ef57d2c4d5275d95f1
font_01_sfnt_off0000f7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C2 5236 bytes
SHA-256: 1b3444f852e74c48301c117733344292e8d8a6f75543d791daec1697dcf9ce0c
font_02_sfnt_off00010997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10997 10240 bytes
SHA-256: 4132a2be1e94d00d34f055682bf861ae2bc6942c2602931f0b388ab8ee1b5103

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