Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d29ce1b276b3a0…

MALICIOUS

PDF

85.4 KB Created: 2021-06-27 05:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e5f13fdf3f2304e1928e8fe3f03f78e5 SHA-1: b101b08cdeba79235025b47e4cf93d44644631a0 SHA-256: 40d29ce1b276b3a071ca17198cf7e793caac46183adcf3c72728d48d6272a130
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1055.012 Process Injection

The PDF file contains numerous links pointing to compromised CMS upload storage, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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 http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607151e6a3599---49457967841.pdf
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/b6aef803c10bbea61e97c0b7600bd0c0/lutabakosunurosugolepu.pdf
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/0lqf2dc6gbpdukqchts95jbg27/7068250310.pdf
    • https://tonitomov.com/picture/file/sukigiwopafot.pdf
    • http://botosani.ro/img/uploads/file/22722557621.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/6182cae10245f859357426a06cc850d7/favokewam.pdf
    • https://medtek.vn/storage/file/mebonusixiforadudebemef.pdf
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/2am2tpgbvdnd21194k64opprpe/9631876587.pdf
    • http://veribase.com/E/file/95111624521.pdf
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b90f01267b8---36200616475.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16088d108201de---xudamemiwozukowozav.pdf
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160ac66a62a608---84828700623.pdf
    • https://mujeresenmovimientoplus.com/userfiles/file/53877299749.pdf
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/ic9jp69oc6q4kkqqh900ohjcl0/budumelumaruvewagesob.pdf
    • https://activepymes.com/pub/file/fotofikutisalowixixadude.pdf
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a503a979beb---vibejuwuperutoja.pdf
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4338fc8757---40430505538.pdf
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/58037128104.pdf
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/c2dnch3k0t165q7e1hejl5utq0/malavapasu.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788137561bc---xoxezojamomufobig.pdf
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb33bc6c703---lebisowiwabomubunix.pdf
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f112a300b5---guxawewesafo.pdf
    • http://riversedgefm.com/files/file/40493728066.pdf
    • http://colescastle.com/clients/875019/File/lifunetusobux.pdf
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac34c90dba3---gewevomotosaxepusazuwala.pdf
    • http://learningkey.org/userfiles/molitomobekokivusibowe.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=the+of+an+element+is+the+total+number+of+protons+and+neutrons+in+the+of+the+atom
    • 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_off0000eb18.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB18 16792 bytes
font_01_sfnt_off0001032a.bin
76840aa0f57b58ef52ba7e38bc849e4efd6e8187a42f27d4f41ae4122f623346		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1032A 16640 bytes
font_02_sfnt_off00012e2f.bin
24a518043673c967efe328cb76b2569131cee905ca558c03b29b3f277ce00692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E2F 10964 bytes

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