Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0d6388f6680dcd…

MALICIOUS

PDF

76.0 KB Created: 2021-06-29 18:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 60d84b780cbc38fa5fe281416b72c831 SHA-1: 3031ec7f6f1405b603f3d9a12a3f957f2e5712a7 SHA-256: 2e0d6388f6680dcdf023aedf38837d5399da1896d273eb078301600fd5f250be
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection as a phishing trojan. It contains a link farm with numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://morabia.fi/images/file/5626602574.pdf
    • http://chatfieldfarms101.com/userimages/wobafuninozel.pdf
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16074a3038eb30---26229107264.pdf
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a79de954801---46075959180.pdf
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16084ce0a45f57---xazevofupibusig.pdf
    • http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/43577602966.pdf
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160d3a1f8b54a5---limudupipebaxebejelerin.pdf
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/89929ab991c0734c6f9a42bf5085a61a/29428358094.pdf
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076e10033605---gesovadifozeweputekapo.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16072f2947530b---lagilubavokemedesozenila.pdf
    • https://universal4shipping.net/userfiles/file/gudaganorab.pdf
    • http://hilltop1976.com/clients/24685/File/lomovivofinofod.pdf
    • http://ellenia3.eu/userfiles/files/weledikuduzojatuluj.pdf
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/97f697c7c5a72b69d68bccf3778a27cf/39855715199.pdf
    • http://technestudio.eu/userfiles/files/mogifiraweme.pdf
    • http://3e-machinery.ru/app/webroot/filesfiles/pulutanabukosutanipil.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608343053d3a6---musalefibuzugudezip.pdf
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/c3dae424e4d61d960db16d3e88ea9e1b/79866503367.pdf
    • http://travelport.pl/userfiles//file/zixerokijapobemezixodive.pdf
    • http://bagumul.com/file_upload/spaw_upload/file/20210527165919.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f53e7771d3---57588832367.pdf
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/qg47fg5lg31ebr2fhbq7eoia40/59267394122.pdf
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16091c577338d2---xukimoxujat.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=after+porn+ends+2+stream
    • 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_off0000c62f.bin
c8e8b3bd74c831f984997a182c1c972c0175441bded98eb039e026b4fab63320
pdf-font-stream PDF embedded font (sfnt) at offset 0xC62F 17576 bytes
font_01_sfnt_off0000f26a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF26A 16792 bytes
font_02_sfnt_off00010a81.bin
2056bed2fee681e8fd6a8e7054f08cfca7fb2c712f9dbb7adf06b4406c82af12
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A81 10620 bytes