Malicious PDF — malware analysis report

Static analysis result for SHA-256 050680fec630e2ec…

MALICIOUS

PDF

85.6 KB Created: 2021-07-09 13:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 718f87002e0a7f506b0e8c0bbd7d1b2c SHA-1: f4d86b99ddf2a847d4841270216e0ba3de151dc4 SHA-256: 050680fec630e2ece3a949d4301f82983caf2c5f59ce2b66f9433a757a1c1c7d
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links, many hosted on compromised websites, suggesting a link farm or phishing lure. The presence of a 'utm_term' parameter in one URL, specifically mentioning 'dream league 2016 football game download', points towards a social engineering tactic to trick users into downloading files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868821e97bf---bukojaxikokel.pdf
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ral1s84luv5pa8b257libnd5f6/rapewilujebumetajaje.pdf
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/ritugasovamakot.pdf
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/13cb49f2a89198c61b85cb12be1314ab/97153571655.pdf
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160965e1589730---watajitokof.pdf
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a721cec792---kunixa.pdf
    • https://damsindia.org/admin/uploads/file/makolupu.pdf
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16090b91300ad9---zolosewenuxenotunomiv.pdf
    • https://blindnow.com/userfiles/file/72264494328.pdf
    • http://zaun-produzent.de/userfiles/file/takomogubunovis.pdf
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/26610de038803b658e791a946d4666a9/kikutovefitup.pdf
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/abf0eeaf93089b407ca52370f98f0b25/24747475449.pdf
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/02671d002213c92a887e2aa9a03df276/xinujipabobipok.pdf
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a856df89d55---48495850365.pdf
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/c951cacdf1120f0dfa835917a92243b9/sinasowepipovawuwi.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cffd67567f---56034896842.pdf
    • http://hanasushipickup.com/uploads/files/46635239228.pdf
    • http://ladyqueen.it/userfiles/files/kexewug.pdf
    • http://sumbulefendiegitimvakfi.com/resimler/files/87896566319.pdf
    • https://jbdclothiers.net/emailer/userfiles/file/repupibevedokurul.pdf
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bca77707744---fuxowuvisebalot.pdf
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9b3334bb8---tijusitiga.pdf
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a224bdca65---57145615290.pdf
    • http://jirehenl.com/userfiles/file/25183207302.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=dream+league+2016+football+game+download
    • 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_off0000ea93.bin
9985f10597116d6d4f2e8e25d2ef116de348a6fd04654a88f9f5c3b8b5f627c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA93 11224 bytes
font_01_sfnt_off000104db.bin
daa2b6fbbd25e781fc02e09dbd20da55387bd59607b0e3fac563a476092e65d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x104DB 17240 bytes
font_02_sfnt_off000130ee.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x130EE 16792 bytes