Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74e03c29018f99d…

MALICIOUS

PDF

103.5 KB Created: 2021-06-28 17:20:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 50db8c3b3c066c375d0b39c417c4846d SHA-1: ea33fd8cc716fc1b4ce1ef74a9921518c650f937 SHA-256: f74e03c29018f99d89389e1f934df4211900b460393401eb0c0f2fa0fd2e0f68
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to compromised websites and disposable hosting, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure and embedded URLs point towards an attempt to lure users to external malicious resources, likely as part of a broader phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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
  • 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.
  • 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://apexnepaltravel.com/userfiles/file/sesizigaloxojosaxipoko.pdf
    • http://falerisztika.hu/tmp/8117206190.pdf
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16077cce12ce95---wosezogobelerop.pdf
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/50b11c4910ecc8ba1c56f1bc19621021/lotebadif.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160800214c89df---90941114580.pdf
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/2a5084cac4b6caa911e58481cc757b76/nasiverena.pdf
    • http://jmvlpslimited.com/ci/userfiles/files/rolunozidawosef.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/4c7c939f7e36cd699d4e986f8cdbca39/18629425258.pdf
    • https://arvikabc.com/images/uploadedimages/file/83642536403.pdf
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/a5q82t46c60s1b44deun5vtm00/detozogatovujaz.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608471859819f---zeguvegajubo.pdf
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/74a246849da923435ec9d5ed5edbfc93/98983616173.pdf
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/8bd2d65eecac968236aca77c5cdaace6/13532925938.pdf
    • http://3dtechgroup.com/uploads/image/files/sivezikejezuvuba.pdf
    • http://alphasigmaoverseas.com/userfiles/file/64765624382.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/6ab91tp3nnse0nb24s7e37j1f2/nemometutufawegejoponij.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/d5dcc19cce29c28156878a23fab01223/41429922825.pdf
    • https://theelementrama9.com/userfiles/files/20210661988.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/6d6e141a87044cbd629e4194091e9444/nafororogonizi.pdf
    • https://accuratesearch.com/userfiles/file/81690483034.pdf
    • http://stsaischoolamritsar.com/slbdavbatala/userfiles/file/43897054375.pdf
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160abed1007c23---27960782392.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608abd0576035---sajuzokafupapobagobex.pdf
    • http://agro-pasz.pl/ckfinder/userfiles/files/9491877177.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=leaves+of+a+healthy+potted+plant+were+coated+with+vaseline+to+block+the+stomata+will+this+plant
    • 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_off00012e98.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E98 16792 bytes
font_01_sfnt_off000146aa.bin
98487b484d33c1ab4c842ff18c55a68410e6fa2a15d48fc298a1e3990004e5e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x146AA 17876 bytes
font_02_sfnt_off0001752d.bin
fe17cd8fafe08b169fd19456c4c0d602b3c1523400a1ef29a81d3e0c1bfb6e4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1752D 11340 bytes