Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b27aeea5151f633…

MALICIOUS

PDF

70.5 KB Created: 2021-04-02 22:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff137a82940f5df5bac27ea204686df8 SHA-1: 5e09fda18e8a44476782c24f06a632f11cdab2ab SHA-256: 8b27aeea5151f633577ab15e7f7687a470b0f3915e0155444e290593c27bea1e
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be related to game settings, serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=star+wars+battlefront+2+settings+ps4
    • https://rurevudo.weebly.com/uploads/1/3/4/2/134265418/00e99441c29b.pdf
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/7895104.pdf
    • https://vigodabazo.weebly.com/uploads/1/3/4/8/134872933/zolofibab-vexeverarew-xipoxu-zudewobojinajaj.pdf
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/d1ef794bf4c4d.pdf
    • http://dizurexemubegog.mygamesonline.org/33695177659.pdf
    • https://xidazujagavoza.weebly.com/uploads/1/3/1/4/131453269/giboku.pdf
    • https://vazejaxos.weebly.com/uploads/1/3/1/3/131382607/severe-wekozagovewapet-mowuju-vezusumuzanebir.pdf
    • http://fikosarodone.medianewsonline.com/xexukifivufupibodemen.pdf
    • https://wivozodibadire.weebly.com/uploads/1/3/0/7/130775536/587014.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bisiku/how_to_install_canon_printer_without_cd_on_mac.pdf
    • https://99b08629-27b2-41dd-83a1-938dc2ca35bd.filesusr.com/ugd/067ecb_ee7c61eb89c8486b96f81ac36ffa3335.pdf?index=true
    • https://uploads.strikinglycdn.com/files/007f063d-33c1-4021-96b3-1d355433e301/lejakopako.pdf
    • http://gakajitaju.atwebpages.com/12166933293.pdf
    • https://5053e88e-9e18-4719-890c-32a1cca0295d.filesusr.com/ugd/411503_bd232c0e019546859092411e6c55bfab.pdf?index=true
    • https://s3.amazonaws.com/minabiwa/books_of_the_bible_printable_coloring_pages.pdf
    • https://uploads.strikinglycdn.com/files/9ab6963b-f1f4-424c-9a02-e329ceaa81ad/vepisefusutafok.pdf
    • https://s3.amazonaws.com/xelimewat/avaya_1416_phone_conference_call.pdf
    • https://s3.amazonaws.com/gusule/feram.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_off0000d5cf.bin
d4735de801d87646a6645eaafdecc4d8d188fae79c0ab1109fa7021fbf2e7361
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CF 5624 bytes
font_01_sfnt_off0000e919.bin
8277779fd53aaca8cb1f3f6d4bcbfbd982198b86483ba2919fd7f2eebe6fe145
pdf-font-stream PDF embedded font (sfnt) at offset 0xE919 10544 bytes