Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfbb8ecd7133d9a5…

MALICIOUS

PDF

71.6 KB Created: 2021-06-16 10:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b641df78ecbb7d832936dd5068e503b SHA-1: 08c026cf3a3c0255a56e5bdb9120e018cd697272 SHA-256: dfbb8ecd7133d9a572c9089b03a37ba3d918f5997ca38cb192ce274a0ae2b1a8
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure for downloading a song, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://crysiq.ru/uplcv?utm_term=tera+chehra+nazar+aaye+mp3+song+download
    • https://infoenergie-loire.org/userfiles/file/guxoxufutuwega.pdf
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088e7e76e3cd---fojezipifosebuwovilireve.pdf
    • http://agcslohian.com/userfiles/file/gipipi.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a3768e7c8f1---vutuxozupokojisumilo.pdf
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16085587ea960a---991250385.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609068daaa210---nemobefamonufozepotezuri.pdf
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/uqmvd3k0jd9rjjsfsflg2rhlam/74688184243.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160711f8793d5b---39454467181.pdf
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/95p9a6pcvoe5r07l2a37u1urum/xiforowezik.pdf
    • http://bagumul.com/file_upload/spaw_upload/file/20210614143420.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b25917a0cb0---siposiw.pdf
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759607ef84b---30764616585.pdf
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160c63c82bc238---7926611386.pdf
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/c829ee2027fccc0ab4f8a76ac796b584/liraxitonavivogubume.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/ae694f81a0915e9bf765af94abfd4723/2132809383.pdf
    • http://atut-biuro.com/uploaded/file/47962127200.pdf
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eca98a8490---fagesiv.pdf
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160712860bfaa4---9962174910.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9a8.bin
a8ba09b65ebedb1c9c9425d0ef252489ab989edac69b3238b0f2586f71ffefe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A8 5844 bytes
font_01_sfnt_off0000ed7d.bin
348760676813ae9facd253a071c5163561035ef30a9bec5c947f877e16ed3210		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED7D 10544 bytes

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