Malicious PDF — malware analysis report

Static analysis result for SHA-256 22758ff65eccb7e4…

MALICIOUS

PDF

79.9 KB Created: 2021-09-19 00:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f3cc3a4e0cfc383b97e6303c4402f1db SHA-1: 9b9662a24ad23ea81130e4be82083893835b3380 SHA-256: 22758ff65eccb7e47cd59b021fb7590fa3bd7a2c9ea4442c842e5c09bd3f1af0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The presence of a link farm on disposable hosting, combined with embedded URIs, strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and heuristic firings point to a malicious PDF designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 http://awards.nl/img/cms/file/4393068819.pdf
    • http://abwingsjanaf.com/uploads/files/43854523448.pdf
    • http://yongchengtech.com/uploads/files/202109061029428881.pdf
    • http://anhbanglaw.com/userfiles/file/gosevenabaninuzed.pdf
    • http://lexprikson.com/admin/style/images/userfiles/file/75297410964.pdf
    • http://orderkai.com/uploads/files/pelamuwiduwe.pdf
    • http://tylincms.com/userfiles/files/81910320351.pdf
    • http://pevak.info/UserFiles/File/60573846646.pdf
    • http://bluebirdcanada.com/FileData/ckfinder/files/20210910_50A70A8D36B0274B.pdf
    • http://thevalleytrader.com/files/nigomokov.pdf
    • http://dieta-plus.pl/userfiles/file/12260160721.pdf
    • https://andymullinscommercial.com/home/andy/public_html/ckfinder/userfiles/files/gavamunatenowozaroto.pdf
    • http://fresh-j.info/images/uploadedimages/file/46794427626.pdf
    • https://dichvuketoansg.com/luutru/files/zorotefuxiralijabijakiv.pdf
    • http://yishiweb.com/upfiles/files/20210904_105850.pdf
    • https://ikitellirezistans.com/upload/files/bokonilajaz.pdf
    • http://prime42.ru/userfiles/files/35537881511.pdf
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/6969428bf763e072a3a468027c11eb40/76160313849.pdf
    • https://thefertilizergranulator.com/d/files/82181892065.pdf
    • https://danielstrehlau.com/userfiles/file/57203694750.pdf
    • http://bebelino.ru/userfiles/file/nufusexevopikever.pdf
    • https://limsurempat.com/contents/files/tofifeper.pdf
    • http://myhomeinparis.com/userfiles/files/jojalufunudeze.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=install+a+font+on+android
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d34c.bin
0dd47cfff3da9181acbddf5eecd9484fef8a93dda2a6f68152b8d821c5016ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD34C 18228 bytes
font_01_sfnt_off00010340.bin
3fe4c4811e6529c9a2d37690961374545d56c537c1ab0c2aac7b3e353455d789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10340 10164 bytes
font_02_sfnt_off00011a0f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A0F 16792 bytes

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