Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e81f14df9c77b4…

MALICIOUS

PDF

91.4 KB Created: 2021-07-01 16:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: add4e5012d637c59472dd11e6d76072d SHA-1: fb4521f88881e9150de00b81b11cc1c7a926f1eb SHA-256: 94e81f14df9c77b4f9f664d7c0351e0a22022bcd43827ccac01ad90c296e82ed
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable hosting, likely intended to redirect users to malicious content. No scripts were extracted, but the structure and URL patterns strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://www.rpv-drachten.nl/files/file/zebufanirojesanevizup.pdf
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/soucdk69k23sa3k5inf80fkdml/dabixubo.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/ec5cfef358f56d7cf02a2e4ac7e41ee7/68239100631.pdf
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/qvtgg78219pbg5nnkdsbt0v6mg/53784773275.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b647b3cf3---28848503695.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c53097a83c8---vovijomonanuvajifajiwimef.pdf
    • https://stonebuild.bg/f/uploads/files/48256183993.pdf
    • https://stopserv.ru/files/file/95816829751.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb44feb906---vegonot.pdf
    • http://korsorlampang.net/user_img/files/vataxinitilov.pdf
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/hdfracok43j8joeiv0mf3421rm/matomaferijobuwamivuz.pdf
    • http://am-assets.com/aom/magnolia/userfiles/file/78577489304.pdf
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/b733e5e18e5d9d37000ac50b303f839e/9210600522.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/d910abf41d9333f4a14f2569b5a1b90d/fiwizel.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a5ba9b57174---44432562222.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb709426cd---vubunavazomaniwogivunazod.pdf
    • http://whalesart.com/uploadfile/file///2021060104544753.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160da539a8f6f5---93597558646.pdf
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078357076bf0---katebeperivofojegujawoj.pdf
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/c926b47fa465ff6463bef525bd51448b/7879521258.pdf
    • http://goldenpeak.it/userfiles/files/zogiwiwutazu.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/34568562319.pdf
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/f1d1633e3a2d525e5ea07725bb7d9c95/katamimobupuzizik.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b7fff95cdc9---wozuvigawexexerodenake.pdf
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720732d2255---bafis.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=miley+cyrus+and+liam+hemsworth+the+last+song
    • 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_off0000ffa5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA5 16792 bytes
font_01_sfnt_off000117bc.bin
2208cc380d0f2ee28ae4d3f8c8ee9669bf6d8971de46cb0a86f019cfea5873c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117BC 11112 bytes
font_02_sfnt_off0001315b.bin
e094036b6d7a7ba0f052724c4755c4826751a4841a52ca49a501649ce0dc9009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1315B 17752 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.