Malicious PDF — malware analysis report

Static analysis result for SHA-256 be880d0206d81de6…

MALICIOUS

PDF

85.8 KB Created: 2021-07-18 04:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5249154554bc9375551b680e090332be SHA-1: cee74a53d0e84f16a9ba6f50ab39a1c9d2aa15aa SHA-256: be880d0206d81de629895e7cd148bb11490bb256684aef0e8bae5103381a68db
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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.
  • 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://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cbd5410e014---ruvuwubujatifufi.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c45ef36bff4---56043504919.pdf
    • http://bio86.fr/fichiers/66326274882.pdf
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810a880c7b5---2121485413.pdf
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/b21cf11e653e2997fca1c4cb46b8fd58/sogov.pdf
    • http://icltindia.in/userfiles/file/42371515563.pdf
    • http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/24351620775.pdf
    • https://pergamine.com/ckfinder/userfiles/files/74958144525.pdf
    • http://kasargod.net/uploads/file/27594849686.pdf
    • http://degrossier.nl/uploads/file/toxisogodekufebutem.pdf
    • https://iphonerepairservice.nl/app/webroot/files/userfiles/files/88095713507.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609602d031f41---wafamifolaron.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/6mpb19fo2iim1191sba3gms6v4/wazelobe.pdf
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbcbea4ac23---45239693931.pdf
    • http://parkwaywest1974.com/clients/861606/File/sawudugupukabo.pdf
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a047ea94554---nadedejulojowe.pdf
    • http://archifolder.com/userfiles/files/90577384544.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/22fb6bec9469a0256ffed698c8b22044/bomasevasebuzap.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/c6751a0ca918f0c1afba38b73c0e70e2/72676417708.pdf
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/aju08hvr129l07kfenmhlq5gpp/21785742642.pdf
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a862566eb5c---28448623015.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/ba7c21d1306a3e96cf4b97f13025f2a1/lejitowaxasuti.pdf
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e10f921d67b---23613865600.pdf
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/ff876db915224436dbce1cab8a776ecd/bumutolil.pdf
    • http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/62054788995.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=masonic+lectures+pdf
    • 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_off0000e8db.bin
b6117494aba1ddbbaf84fd721195dedbe9c4c8e0c85fd797d30b2e20ed6fee0e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DB 18932 bytes
font_01_sfnt_off0001191e.bin
7db66a529b20e9c25b9847f910691534672227e35219aac1edaae10cf2bf8770
pdf-font-stream PDF embedded font (sfnt) at offset 0x1191E 10704 bytes
font_02_sfnt_off000131d5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x131D5 16792 bytes