Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d82ee647a39cfb…

MALICIOUS

PDF

68.0 KB Created: 2021-09-16 17:38:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fdf0b43f912a887ab59918824d520e66 SHA-1: 022d8275d28b46a12e16910b185199136542a513 SHA-256: f0d82ee647a39cfb793e0e50e3e029128cac885a0adee47755692aea037ce257
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing campaigns, containing numerous links to external PDF files hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further payloads. No scripts were extracted, but the PDF structure and embedded URLs suggest a phishing or malware distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://vetusmeter.com/images/upload/File/mofofebexetedo.pdf In PDF document text
    • https://essuances.com/ckfinder/userfiles/files/xigavotubowigenoluwuri.pdfIn PDF document text
    • https://j26clean.com/upload/files/ronizefowumesom.pdfIn PDF document text
    • http://woodbridgeabw.com/uploads/files/lifozumategivusexepogagog.pdfIn PDF document text
    • http://3dsami.org/uploadfilefiles/ketag.pdfIn PDF document text
    • http://fusheng-vietnam.vn/admin/webroot/upload/image/files/24467081590.pdfIn PDF document text
    • http://domplus.su/userfiles/files/towuvigalomaguto.pdfIn PDF document text
    • https://dpengineerindia.com/admin/userfiles/file/vitarew.pdfIn PDF document text
    • http://yourhandmadeitems.com/userfiles/file/86317051848.pdfIn PDF document text
    • http://xn--80aejmo0alc.xn--p1ai/ckfinder/userfiles/files/rawazaxuvem.pdfIn PDF document text
    • http://www.boldino-hotel.com/ckfinder/userfiles/files/55723321704.pdfIn PDF document text
    • http://akbarestate.com/survey/userfiles/files/98589844658.pdfIn PDF document text
    • https://u15.ch/ckfinder/userfiles/files/72071235401.pdfIn PDF document text
    • https://officialbacknumber.org/editor_up/8736707254.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/94273321864.pdfIn PDF document text
    • https://tekartltd.com/upload/files/tajukubir.pdfIn PDF document text
    • http://jungam21.com/upfiles/file/1631082432.pdfIn PDF document text
    • http://fanghsin.com/uploads/files/202109162156503690.pdfIn PDF document text
    • https://tonerihned.cz/userfiles/file/45002362680.pdfIn PDF document text
    • http://nemochem.cn/upload/files/38531813001.pdfIn PDF document text
    • https://mayphotocopydogia.com/upload/files/73599239114.pdfIn PDF document text
    • https://mayphoviet.com/media/ftp/file/93700806124.pdfIn PDF document text
    • https://oncallanatomist.com/ckfinder/userfiles/files/56235496013.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=du+speed+booster+old+version+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_off0000ad01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD01 10780 bytes
SHA-256: 2bfa4c7a9cd507f62821524761162c1b97425fa198ba2a8997ec00bf84e14800
font_01_sfnt_off0000c5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ddd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD6 14156 bytes
SHA-256: 4ac3c5c36a007f852b1af095e7b81a9a5a6a664713dbfa004e5a93b169a15eef

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