Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6278dc08930757…

MALICIOUS

PDF

86.2 KB Created: 2021-07-05 23:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ba4c12d616730565f19c502649033bbf SHA-1: 994bc0192da270953ca02e23785e6a48e20a77a2 SHA-256: aa6278dc08930757864a19d3f7a324976f5821383b04660e323069f7b15c4231
166 Risk Score

Malware Insights

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

The sample was identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. It contains multiple links pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The document's structure and heuristic firings strongly suggest a phishing lure designed to trick users into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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 https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/e5263aa591973eee695fdf08fe168f78/27324131309.pdf
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/rku73n6h1m91lbkuerhl0odjpk/15133818046.pdf
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608654df690d7---14354724389.pdf
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608576d670092---20502999481.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf0ad6af48---piretorunoximagadanemojo.pdf
    • http://niezapominajkowo.eu/userfiles/file/65533846505.pdf
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/04175943394a9cb807374df34c73118c/nebosemozifoletofijenawon.pdf
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/afbl72ike4vqll0o3sur7vnk2c/jugikijijigapojikoxoludob.pdf
    • https://alate.org/admin/fckeditor/editorfile/lunuzovalikebow.pdf
    • http://15fratrowreunion.com/clients/2/2b/2b18ccadde375fd95e9ac2d5db5aaa67/File/49166746593.pdf
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608392819288e---37660324635.pdf
    • http://progettarecasa.com/userfiles/files/dugozawegeripozofiva.pdf
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/fatej.pdf
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/c940ee6fb1aceb1a5b825836c2175aa0/70218152314.pdf
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608553db13712---19711381460.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ad26085e6---25495057936.pdf
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16083e70ccfc6f---lipulutuzofirulorot.pdf
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f52b90abbb---dofujumuzixowobutodutuvav.pdf
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5764520fa7---26053847664.pdf
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/8bll4pjp3b9tc99vlbitcanjm5/vebasu.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/a1crlsu1925a53tv55ou2u96s4/valube.pdf
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/a4af76b1db61b1601143aa45bca1c804/16669698408.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/38db283d77a3c38368c5a59249435d6d/mugok.pdf
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/eda385234bd4d5ee09fe17d7f9d79706/titakekawokumevugukegopew.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=ooad+important+questions+with+answers
    • 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_off0000ec3a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3A 16792 bytes
font_01_sfnt_off00010451.bin
b21ea7a3d0d0077c0f08f819efa1de3547b3b7b8ff9bd1edade7b41a5ee1abc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10451 10968 bytes
font_02_sfnt_off00011d66.bin
0d4ffee3cf7835297bf7a110a9d901969a73046a6c4ae14eaeabe0c1fdc8e8ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x11D66 17452 bytes