Malicious PDF — malware analysis report

Static analysis result for SHA-256 070d82d5f742224f…

MALICIOUS

PDF

414.6 KB Created: 2021-05-22 01:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1118beace36dc891a5c935e7afd8ca73 SHA-1: b19c7607b1ab3def6ea349a0f861258e5effcf22 SHA-256: 070d82d5f742224f728ba2797f1371fe9610dee1ab6a5b0ca2077e69d4df0cb3
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains links to compromised WordPress upload storage, suggesting it is part of a phishing campaign. The document body, though heavily obfuscated, contains references to 'Pokemon in hindi season 2 episode 15', likely a lure to entice users to download the malicious PDF. The presence of embedded URLs and the nature of the heuristics indicate the file is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 7

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/l59chq4mc76ptu9kr1hmsvit2h/22662886253.pdf In PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/0h5ki1u1sas9hqq125tuf28psp/zubaziriwodajerajop.pdfIn PDF document text
    • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a489b65741---9727483802.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/jopitisuxewuxanobud.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16090956dd04af---67307740164.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f93a6df81e---fexokixeporibabami.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608117f30ea64---lozuj.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/87d84fc593310f24849c560fb23ab98f/40179388692.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607e28fb127b8---xudenomaxor.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/12169766962.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/2f9c008a274ea1225ad3d24309e2f87b/popoxepikodifepiwibuj.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160787d6c667bf---71889297679.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/bb0c5ig3kq7aqq1fi5mrtet29c/71646147460.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16072e9ee352ad---47228609267.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a510d415e43---25839839597.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082af2ed54fb---30429083880.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/zamakumepuzukitagobav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=pokemon+in+hindi+season+2+episode+15PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000389a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x389A0 228152 bytes
SHA-256: 1a92fef0a7e51eff0bde0b7116684e47fa36f819902ccecf23e20e0e84a2dbc3
font_01_sfnt_off00061a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A24 5444 bytes
SHA-256: 06d0f023d3debf618619784b33e38b977df43865a183b1226d0a884ea3e8fb6a
font_02_sfnt_off00062c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C92 12004 bytes
SHA-256: 721cc2a6902ecf47042096874ee6aab6656d4f48663d25408d16203417d2ce2c
font_03_sfnt_off00065389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65389 17048 bytes
SHA-256: 2076539e4eda7c5615d62d5dd597887e82bf3c8b6787bc0ffb22602b3611264c

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