Malicious PDF — malware analysis report

Static analysis result for SHA-256 2977ce2e66516d77…

MALICIOUS

PDF

68.4 KB Created: 2021-09-28 02:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 01dc7f2cf5a6a0e4649cc89309652943 SHA-1: 185be3a5ad95e2568a1c66383554eccdae40ddf1 SHA-256: 2977ce2e66516d777315fd91d0f435eb8ec883c094c491af605966409b99f10d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as an external URI likely used for malicious redirection. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of hosting many links on disposable domains, a common tactic for phishing or distributing malware. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ketchas.ru/uplcv?utm_term=albion%27s+seed+pdf PDF link annotation
    • https://pypconsultores.mx/userfiles/file/49494560053.pdfIn PDF document text
    • http://www.lalorraineperdue.com/documents/47337036961.pdfIn PDF document text
    • http://nicolalazzarotto.com/userfiles/files/xirijuzixu.pdfIn PDF document text
    • http://isvpro.com/custom/files/57632867732.pdfIn PDF document text
    • http://haokunchem.cn/upload/files/16305970319.pdfIn PDF document text
    • http://worldwidestationeryholdings.com/files/file/ripobizutevapaxibudif.pdfIn PDF document text
    • http://oasis-inwaste.asia/files/file/53876529852.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161462eab2c4f7---tulalafajunevawow.pdfIn PDF document text
    • http://www.farmaciapenil.es/userfiles/files/vamuvuxoxofubiwigub.pdfIn PDF document text
    • https://lesrimaudieres.com/images/uploads/file/54427921264.pdfIn PDF document text
    • https://smartcrm.cloud/upload/files/xanozakibajad.pdfIn PDF document text
    • http://magyaringatlanadatbazis.hu/dev/_user/file/kiwuzedafasozafijipatini.pdfIn PDF document text
    • http://kwong-cheong.com/userfiles/tukunuxesuxu.pdfIn PDF document text
    • https://cauthinh.com/luutru/files/videkak.pdfIn PDF document text
    • http://reclameindex.nl/images/uploads/74171571124.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/58311823713.pdfIn PDF document text
    • https://yukkumpulgroup2.com/contents/files/koxizonomipaxeguvupazop.pdfIn PDF document text
    • https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/81036294093.pdfIn PDF document text
    • https://angelsforwarriors.org/userfiles/files/zegowakovove.pdfIn PDF document text
    • http://biosurfest.com/userfiles/files/kevekonozuxib.pdfIn PDF document text
    • https://designsdubaiukfashion.com/userfiles/file/60806001527.pdfIn PDF document text
    • https://vivekanandbawwa.com/userfiles/file/savabesosulisikiwanegalax.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021091613544216.pdfIn PDF document text
    • 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_off0000add6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADD6 15544 bytes
SHA-256: f3651200c4c6d72c9fd0ffaa044894685b3740265d2538cee4be682fb0d9bb84
font_01_sfnt_off0000d50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50F 10288 bytes
SHA-256: b64ae696098525d3c2c1bab87d504aa99798f08bc3f5fa0045f4d2a45314b26f
font_02_sfnt_off0000ec1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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