Malicious PDF — malware analysis report

Static analysis result for SHA-256 034af500129adb85…

MALICIOUS

PDF

78.0 KB Created: 2021-09-28 21:18:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 1add2325cf6d678ad72a02701038e74a SHA-1: 4f362bbe99d6c06206edb528589df8ceba8e7e7f SHA-256: 034af500129adb8511f78989402bf20ce84195cbc10233dde16840864659f6e9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URLs, particularly the one hosted on 'pwmtqatar.net', are part of a link farm designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://pwmtqatar.net/userfiles/file/dabas.pdf In PDF document text
    • https://anbuadidravidarmatrimony.com/ckfinder/userfiles/files/5700626485.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/62006609264.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161518b2146dce---bikokiwegijepi.pdfIn PDF document text
    • http://studiotecnicofrisoli.com/userfiles/files/33271787984.pdfIn PDF document text
    • http://robotsuk.com/luckingbros.co.uk/userfiles/files/favipekasamejinuv.pdfIn PDF document text
    • http://inarchengineering.it/userfiles/files/tijuwokozolevuruvo.pdfIn PDF document text
    • https://idroilektriki.gr/files/file/34836331060.pdfIn PDF document text
    • http://pnlestari.com/visitbali/image/files/98623473913.pdfIn PDF document text
    • http://csc0532.com/userfiles/file/20210912032931_0021h7.pdfIn PDF document text
    • https://volandovia.it/public/fileeditor/file/17766218010.pdfIn PDF document text
    • http://we-women.de/default/files/uploads/file/90702209114.pdfIn PDF document text
    • http://bargiel.com.pl/ckfinder/userfiles/files/31625952540.pdfIn PDF document text
    • https://krygina40.ru/UserFiles/File/webevumararurum.pdfIn PDF document text
    • https://parlagame.net/calisma2/files/uploads/zifufewijimu.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161322d6b66885---54813154758.pdfIn PDF document text
    • http://siamsankyo.com/Uploads/file/80237500039.pdfIn PDF document text
    • http://vanhacollection.com/images/files/gujixaburabatalarixoti.pdfIn PDF document text
    • http://antopol.topmebli.com/content/xuploadimages/file/49861465744.pdfIn PDF document text
    • http://wpklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rafut.pdfIn PDF document text
    • http://bud-med.eu/userfiles/file/kojokifami.pdfIn PDF document text
    • https://magnettoptan.com/upload/ckfinder/files/45561360729.pdfIn PDF document text
    • http://itaxabc.com/userfiles/file/20210921041042_228035104.pdfIn PDF document text
    • http://zentrumok.com/userfile/files/15706084061.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=call+of+duty+black+ops+1+apk+downloadPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC228 21396 bytes
SHA-256: a376332e1dc219c3a64ddd6f3f2b1e07329416d4c829b94e339bd9a71cc36433
font_01_sfnt_off0000f8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001110c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110C 10904 bytes
SHA-256: 775e3a5314fbde2023481c3d0b5aa1bbe67389295e2000432e427785f0271bb5