Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9515acb9aaece5…

MALICIOUS

PDF

80.4 KB Created: 2021-07-04 04:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 272ba916fc529453f2dac73d1927bb35 SHA-1: 7cef0ca1ab4606fbf4e6179e38d2b59003529e42 SHA-256: 5e9515acb9aaece576bff1cf66426b0970c5fa895f5b297644620ce3a9c8163c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to potentially compromised websites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest it's designed to exploit users by directing them to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/6849d992be16ad6af20376bfdb083cc9/gulinowewisubu.pdf
    • http://clubselectionvoyages.com/images/file/wiferuvukidubo.pdf
    • https://penal-garazh.ru/files/92041435812.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16080321b4aea6---kimanejopu.pdf
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/e378efd75d4fac249ff840b8a4d9456f/98925209195.pdf
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4335d6bb0---71210134831.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/2c115be477ea4a82fcee1083bf6c6259/rixunuzavetarorosire.pdf
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/0623270f91eb562358fbc754aa875b55/rofitasanu.pdf
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/movcomobo4u2bba417389m1ue7/kuwaxizuzurorok.pdf
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607987eabc99d---joberufa.pdf
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/e156e67da1f286eaaa62ee0d8dc54a90/98678785344.pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b79f764206d---68558674978.pdf
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081138c16acb---36937532381.pdf
    • http://stacjaregeneracja.pl/userfiles/file/xogifelodafagigepagu.pdf
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdef85f660---70618482223.pdf
    • https://hattoco.vn/images/ckeditor/files/vuxibitiku.pdf
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd4381bbada---58662801574.pdf
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/4e423d3aa82a8c4bafb9f2971949a9ba/44346096500.pdf
    • http://apsara.ru/userfiles/file/fobotubi.pdf
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/846ho21lmcuef2pato9lnaq5b3/46526002881.pdf
    • http://nedirajtebosnu.net/userfiles/file/77714823196.pdf
    • http://garmagostaran.com/Upload/file/golumotutenidarijal.pdf
    • http://lakehighlandsrw.org/clients/863582/File/40878659405.pdf
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/irbgbr989tl2tt909mprr63c38/bujetiworezabomor.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=the+boss+baby+full+movie+tamil+dubbed+tamilrockers
    • 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_off0000d36f.bin
1726280d5ea3e4b341afab54c65778bb48878501af57ceade17e13992449a697
pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 11112 bytes
font_01_sfnt_off0000ed6c.bin
c868e5654527b6708c3b172c5d176c755067b840250f81f08d2f8162b9238919
pdf-font-stream PDF embedded font (sfnt) at offset 0xED6C 17788 bytes
font_02_sfnt_off00011bf8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF8 16792 bytes