Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ac20148d545fc7…

MALICIOUS

PDF

118.0 KB Created: 2021-09-01 19:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4c6470c91a61b04a829f5e01cb94690e SHA-1: 71fea8dffa6e91e6a733750ef1ada7e23b99bb0c SHA-256: 95ac20148d545fc7703bde9bded66c2ace421e02872d276b5ffaa74c586d0e6b
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file contains embedded JavaScript and numerous links to external URLs, many of which are hosted on compromised CMS platforms or disposable domains, indicating a phishing or scam attempt. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's content is designed to trick users into paying fees for a non-existent prize or parcel. The embedded JavaScript likely serves to further the malicious aims, possibly by redirecting the user or downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 9

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://creativitagh.com/pevron/www/img/file/farebumom.pdf
    • http://bestbuyfromindia.com/userfiles/file/daxotamosudufut.pdf
    • http://shipsupply.ru/userfiles/files/samejogifelasimuki.pdf
    • http://gdwtechnology.com/fckeditor/file/pebovibilivugufibaw.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/7b5fbe03dec7e0a489ac06f03093c316/99825720584.pdf
    • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a76a0b0c4d---riputigonesi.pdf
    • http://taiyoaquris.cn/upload/userfiles/files/20210602055451.pdf
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16082859b8f671---62757112094.pdf
    • http://qkmedica.com/uploads/userfiles/file/32762786305.pdf
    • http://kaizousha.com/js/upload/files/29334980087.pdf
    • http://101balkon.ru/upload/files/79683830725.pdf
    • http://theemasternetworker.com/ckfinder/userfiles/files/60468886047.pdf
    • https://ptogel2.com/contents//files/wegegameminofexi.pdf
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/2ffdb772b47537ce4b72817df12ca6cb/16682321608.pdf
    • http://123dvere.sk/files/file/6471637642.pdf
    • https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/2f8c3cd629eef69cc2e81c356f497aab/kilamipasaxugovuri.pdf
    • https://waelfawzy.com/userfiles/file/
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075b0831cec7---dumiteginififamole.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4c6273b76---jiwasokenomikelafot.pdf
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5f90296e0---57642097269.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160dd7cab9ebeb---50669074633.pdf
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/t01tmccb2orrb9oj6kihjiuoce/dofelad.pdf
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/c99d253725cc35cee026ad7fbf0100cc/47470269089.pdf
    • http://fuzoku-kyujin.jp/ckfinder/userfiles/files/27150211536.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160ac166e5e6a4---vujevorififilafat.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=call+of+cthulhu+creating+a+character
    • 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_off000164c4.bin
1fdd38144a1f28be0863cd9be8cad4d4add3d96b99746475e1298030aeea7a7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x164C4 19560 bytes
font_01_sfnt_off000196c5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x196C5 16792 bytes
font_02_sfnt_off0001aedc.bin
e8c65d909c82ff9f1b86d9f01e9622583d9fa0fc67bfee7f5509acebf8bb5948
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AEDC 10580 bytes