Malicious PDF — malware analysis report

Static analysis result for SHA-256 282f2e94a130fce0…

MALICIOUS

PDF

82.4 KB Created: 2021-07-24 20:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 44bfbac80e9a82ed459e961d6aa94df1 SHA-1: 09ab32230d85a10db99fe56ec232a543a5b1f07b SHA-256: 282f2e94a130fce096137e8f42fdd32cf46e543bf81a5932e2b279bca9d5c669
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document functions as a link farm, containing numerous URLs that point to various websites. Several of these URLs are hosted on compromised CMS upload storage, indicating a potential distribution point for malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://boeschfamilytravels.com/clients/43210/File/2780009529.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16080e9c7d2252---70291234397.pdf
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072fe4737c29---gobulewujamujijusag.pdf
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3fd2b808d---borologarefojaxekigubonof.pdf
    • http://tele-video.ru/upload/files/minaxewoledamodawaj.pdf
    • http://tanphatinst.com/vietkiendo/upload/file/vinatudiligefamifej.pdf
    • http://cappellastudio.it/userfiles/files/12549887553.pdf
    • http://altinay-law.com/images/file/73955261613.pdf
    • https://banghenails.com/upload/file/wujevuwajojego.pdf
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098c24c2dd36---11348590047.pdf
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/721e28c605e5d414fc4e7a56b0fc4ce2/demipedisetitajoxe.pdf
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdfe7b2fba6---xenom.pdf
    • https://flyags.com/editorResources/file///nepemibebenozuba.pdf
    • http://xoblates.com/clients/e/e0/e08cfb93fb97b00c28394d0532709dc9/File/58611803792.pdf
    • https://acgroupenterprise.com/userfiles/file/ruxozowole.pdf
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc264e0d6f4---wimig.pdf
    • http://ainut.fi/userfiles/file/lefufigotuxupagawuv.pdf
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d195aee25e4---rasukivaveboxorajewuluge.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/33cebe78c5da3a2f7a78b1e1db9e834f/43196950553.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093d48cbc953---8764201120.pdf
    • http://hiddenforrest.net/clients/76790/File/24037204772.pdf
    • https://virker-ikke.dk/files/7592309737.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=coleman+lantern+lt+17b+for+sale+near+me
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ae.bin
d7200c8a4ea15c1e435da903ba215a26c1c3ea1fb09f4523ba8cb6ec4bf217ad
pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AE 10556 bytes
font_01_sfnt_off0000dfea.bin
00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEA 16140 bytes
font_02_sfnt_off0000f562.bin
21d7a537326423a914731abb8f55961c9330a38ae0babaf48ab3eab92ddabe04
pdf-font-stream PDF embedded font (sfnt) at offset 0xF562 17560 bytes
font_03_sfnt_off0001237f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1237F 16792 bytes