Malicious PDF — malware analysis report

Static analysis result for SHA-256 f632a92ec0db03af…

MALICIOUS

PDF

88.3 KB Created: 2021-03-27 22:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8efb083827cb2f8246533a26dca53786 SHA-1: d549ef9b5dd823e211008113b0c38003d5e33018 SHA-256: f632a92ec0db03af98c6f504059de4c80e27699ff8df821e5a1b2cd1f6fe5590
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to mimic a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The PDF structure and embedded URI heuristic point to the primary attack vector being the redirection to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=warlock+languages+dnd+5e
    • https://cdn-cms.f-static.net/uploads/4419193/normal_6042fa52074cf.pdf
    • https://cdn.sqhk.co/kagumuzom/Khb72Xd/free_sugar_skull_wallpapers_for_android.pdf
    • https://cdn-cms.f-static.net/uploads/4459937/normal_604b5137154be.pdf
    • https://xemalijojododud.weebly.com/uploads/1/3/0/9/130969235/4cc6de8.pdf
    • http://cyberghost.store/aroma_diffuser_muji_manualxfrkj.pdf
    • https://kezexawu.weebly.com/uploads/1/3/0/8/130814062/a332b71eb148.pdf
    • https://peromukagitogim.weebly.com/uploads/1/3/1/3/131383820/vumalobego.pdf
    • http://wetepuzasuvuroz.22web.org/free_cloze_worksheets.pdf
    • http://lixufejogesapu.22web.org/43181370057.pdf
    • https://zirakamu.weebly.com/uploads/1/3/1/3/131398357/6511787.pdf
    • https://cdn.sqhk.co/gubisagebuto/sUmx4ib/playstation_store_gift_card_redeem.pdf
    • https://cdn-cms.f-static.net/uploads/4368969/normal_601abb194d3f8.pdf
    • https://cdn.sqhk.co/jafetegupam/Tvehcie/brick_buster_game_legit.pdf
    • https://cdn-cms.f-static.net/uploads/4450731/normal_605363c24fe6d.pdf
    • http://reduslimer.website/770449980316s2mx.pdf
    • https://static.s123-cdn-static.com/uploads/4390661/normal_5ff3c1aea4004.pdf
    • https://buwipifigidorip.weebly.com/uploads/1/3/0/8/130813409/xerexinut.pdf
    • https://cdn.sqhk.co/gawagunikuw/icjjgiX/starfish_movie_wikipedia.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jexoxitisujoj.rf.gd/24109220037.pdf
    • http://memuwalarike.rf.gd/bosniak_renal_cyst.pdf
    • https://s3.amazonaws.com/dojivewobasuval/23062105098.pdf
    • https://s3.amazonaws.com/gapivegek/mawob.pdf
    • https://s3.amazonaws.com/liguwubore/vawum.pdf
    • http://pajotobob.epizy.com/48407100825.pdf
    • https://s3.amazonaws.com/jolozidabi/nogifiri.pdf
    • https://s3.amazonaws.com/mejados/auto_sketchbook_app.pdf
    • 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_off00011bcf.bin
1567a91d2d8709a909e3a6c12ceaf1194b67a7ee46523aa9ccc2846897c31842
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCF 5308 bytes
font_01_sfnt_off00012dfd.bin
3f2c8be18d64856d9c99ee5bd4a9b717090131db2840cf9cb0e2b1225dd0d92c
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DFD 11096 bytes