Malicious PDF — malware analysis report

Static analysis result for SHA-256 97007459d946c6ba…

MALICIOUS

PDF

84.9 KB Created: 2021-06-29 17:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e719b9002a465f5fd958acd6c566ffed SHA-1: 1f9fdb32cd3264778dcad6101b972b9e4b083883 SHA-256: 97007459d946c6baf29e7de8a35a013d709fb1d711ffed9e161c7d83ed8ee145
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript stream and numerous external links, many of which point to compromised WordPress upload directories or disposable hosting, indicating a phishing or redirection attempt. ClamAV detection and ML classification strongly suggest malicious intent, likely to deliver a secondary payload or lead users to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 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 http://aksaaydinlatma.com/img/editor/image/file/jalurawazegizilaf.pdf
    • https://cowichanmusicfestival.com/userfiles/file/mekex.pdf
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/10ee7557eeebe7754f9f3374996a3cf3/93938246653.pdf
    • http://ucinnovation.ru/admin/ckfinder/userfiles/files/2050810315.pdf
    • https://verandapattaya.com/userfiles/files/xafesodumejesuba.pdf
    • http://gwhs79.com/clients/867100/File/rofidozisevosotemifokoxes.pdf
    • https://grup-insaat.com/userfiles/file/jonalelexunesanolu.pdf
    • http://yuha.be/_files/file/xugefebizajafumugule.pdf
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/g73pak3olq32kfhugvrdpln85f/698007459.pdf
    • http://niestachow.pl/data/aktualnosci_imgs/file/texonofiludag.pdf
    • http://asckhn.com/acskhn/userfiles/file/biveduzakore.pdf
    • http://apluskleaning.com/admin/images/file/nevapuforok.pdf
    • http://stoewebdesign.no/userfiles/file/99928880437.pdf
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/d7fb090e898cef143864ba143162d085/89282150420.pdf
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/16a06vn6mrkoi5o9bel5nsmv7e/68072422199.pdf
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/25er4o4bbr0kalfiob0f3kko71/31226656602.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/0c6fb5e94bf87206d298c43e8cbc342c/25698196316.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/mosixupepowi.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c007578d796---kuvivedelovomabipusokik.pdf
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b579d16d5d4---68088770378.pdf
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/e7369ba0ff6fc34f3146de0f69af7fb3/gupizifirepofuzijelita.pdf
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/be44dbd9fcba9fac31d4ec8e5960aada/duxojumumufitewasasu.pdf
    • http://www.jobsincrete.gr/images/_user_na/file/nozirudinoba.pdf
    • http://epoch-making.jp/js/upload/files/24241587753.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=white+worms+in+child%27s+poop
    • 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_off0000eb6d.bin
e057fdd9b7f4726341733aa574b121d2ef62ca7fad40d423f086d9cee35d1963
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6D 16464 bytes
font_01_sfnt_off0001160c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1160C 16792 bytes
font_02_sfnt_off00012e23.bin
1252ff983e8590e916c3ed30cc0f938cf3da064ec96ba1a242cf2ab26026a392
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E23 10732 bytes