Malicious PDF — malware analysis report

Static analysis result for SHA-256 c496a487a9fc7e0b…

MALICIOUS

PDF

83.8 KB Created: 2021-09-02 08:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 9609b27abf0f336ca61a7be6eee7744a SHA-1: 7555915cc60143da231f04bf63784c8922aa5db0 SHA-256: c496a487a9fc7e0b10023bc2e0f14aaf303ebcdb001666ec075eb81e8b48d4da
176 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting an attempt to distribute malicious content or conduct phishing. The presence of a QR code lure further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d663e3ab6f6---goxotosefejalizijiliwe.pdf In PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607831aec1578---63223313788.pdfIn PDF document text
    • http://sillajen.com/fckeditor/_upload/file/xofofezezudis.pdfIn PDF document text
    • http://nguyenquangcomputer.com/upload/ck/files/janiliguvudimaxudi.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089dbd2d5e10---kitonebe.pdfIn PDF document text
    • http://air-ned.com/uploads/files/wutijekobazerojagisujakew.pdfIn PDF document text
    • http://argol-editions.fr/userfiles/file/4990749741.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff1f0a28bb2---bakamodabokexodupomopuvug.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/d7ef23c484b9da97852972a2885536d6/37701790262.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882c915a444---wutiremokulofosa.pdfIn PDF document text
    • http://benjamin1908.com/clients/f/f4/f4560e3fe432b95d15e234f900dec36a/File/zabigeradupisepos.pdfIn PDF document text
    • http://cowmoo.org/ckfinder/userfiles/files/bazirawimofidinobamazoz.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/jt678s4qid6fja2al4iq38gu1s/mikekekosexi.pdfIn PDF document text
    • http://traslochimontalto.it/userfiles/files/riwadasumut.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/14672295691.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/3c812bb6ab93bd4fadd6784251034aaa/89310411824.pdfIn PDF document text
    • http://tai-group.com/upload/files/45309327274.pdfIn PDF document text
    • https://netpage.info/userfiles/file/87029986356.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/f7urvamo6k11di4pl0qk5pphn2/61310167542.pdfIn PDF document text
    • http://dvg.asia/ckfinder/uploadfiles/files/jikebafepajifadozitug.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/a05jjhl71pfeb66ni3d4allrm0/96346441237.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/6fea1476cfa306aa473f659e77215a08/pomotadek.pdfIn PDF document text
    • http://bluelakehomestay.com/uploads/image/files/mijuzemekamilatowelinijob.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/afe063dd62b08dbe81173355a0bab5b4/xaburovodibebojip.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+see+saved+wifi+password+in+androidPDF 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE046 18424 bytes
SHA-256: d175980d6b9ba0e69c6902f0afc66e978bbf2d29b4ff1b01fa4374abbc2ff1d8
font_01_sfnt_off00011037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11037 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001284e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1284E 10588 bytes
SHA-256: 6f156df5dbebede4d3b7949ffd0911ae78f4269193d0a20e46cb9b718ce49b0b

Open this report in the interactive analyzer, or submit your own file for analysis.