Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe4964ba00aa6ad…

MALICIOUS

PDF

142.0 KB Created: 2021-06-26 06:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 49f41db1eb4c0671d3a0c24a73ecde9c SHA-1: fe2204a6f96b18e52b83643e6ded83ec1de3b7c9 SHA-256: 9fe4964ba00aa6adf0d68e35782da1fcab693e452985db9d25a3ab88dc7a5eca
164 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites. These links likely serve as lures to either phishing pages or malware download sites, aiming to trick users into clicking them.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607025555d0f7---tokotesonilewumoze.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b6001841255---bezuf.pdf
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/3202419e96a9738eb84e02b05fad1bfd/defusutunodazoziwimilug.pdf
    • http://thomas-reunion.com/clients/8/86/86f5f051d314e00f57792b8428d7085d/File/73931567557.pdf
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f29dec2036---64939978033.pdf
    • http://kuzfarm.ru/images/file/46050816885.pdf
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/9350012806ba2f33d0628df53ac3e513/34751926789.pdf
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/3b61b6cb0a22de596b87398a2d1ab6a4/34031196514.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098446eda888---lifenoz.pdf
    • http://hongdacable.com/d/files/85501195804.pdf
    • https://afayl.com/userfiles/file/likotezeteburotaxodokuw.pdf
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/lph68l5fs7gmsflam63qpbkl8p/20826003271.pdf
    • http://albino-pitti.com/pub_img/file/jikibadizozi.pdf
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f49d1036a7---88545383322.pdf
    • http://10glazsikeyrosa.ru/file/92036090530.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/sa5s6cl5qm9si1c4a68cvh9sd2/dirimop.pdf
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/2d95e065a939a97ce8c7e0dd80452316/bovujegurotagupojakuzeve.pdf
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f2255378773a7ffa4ba291f981338d3b/totufavowidaline.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/lj5akuvqntjcmp4u359shmnds3/gosamomukusomupifigagi.pdf
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b56f327ff---43717882762.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c224dee0cc---zeruxeb.pdf
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/0860b82d385078b48d835bbddb20ef93/babowanefabe.pdf
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c03e41947d2---9324439008.pdf
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/e3992c55f3b1b6269c7506021e726f77/niwirulibulatanoviw.pdf
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a61d10a9cd0---57383527328.pdf
    • https://mmszke.hu/files/file/99899046070.pdf
    • http://doktor-okonski.pl/uploadimg/file/papum.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/4ca08263516b413f24c9f38c2f98528d/tadujelufanab.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=bus+simulator+2+download+for+pc
    • 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_off0001c5cd.bin
240315817f6f2b94be114ec8229f1e51b004cf79f9821e3a3d9900a9a964881a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1C5CD 19592 bytes
font_01_sfnt_off0001f689.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F689 16792 bytes
font_02_sfnt_off00020ea0.bin
3d3b6e9955db6ec89ba560eeaaa9327f89f909aa096561b6f841958560a7adda
pdf-font-stream PDF embedded font (sfnt) at offset 0x20EA0 11008 bytes