Malicious PDF — malware analysis report

Static analysis result for SHA-256 96aec9eb0b190aa8…

MALICIOUS

PDF

84.7 KB Created: 2021-05-24 20:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c6d873b43b539566b927afb751873a39 SHA-1: cb6b2e9f48bc21cf67425440c923a39b177c1684 SHA-256: 96aec9eb0b190aa892dfb581220d234ae92ec8270d41e58098d8a19783e85e38
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. The embedded URLs, such as 'https://golowaki.ru/strik?utm_term=recep+ivedik+3+full+izle+t%25C3%25BCrk%25C3%25A7e+dublaj+720p', suggest a lure to a fake streaming page, likely to facilitate phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/strik?utm_term=recep+ivedik+3+full+izle+t%25C3%25BCrk%25C3%25A7e+dublaj+720p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489981/normal_605c08bde10de.pdfIn PDF document text
    • https://wudatoguji.weebly.com/uploads/1/3/4/8/134885495/wavizajexanojikavi.pdfIn PDF document text
    • https://nulejifoxomopik.weebly.com/uploads/1/3/1/4/131437436/zitedenana-gulununuze-tipokoraladu.pdfIn PDF document text
    • https://suzitarux.weebly.com/uploads/1/3/4/6/134683800/zakekovikusolu.pdfIn PDF document text
    • https://nuresoxak.weebly.com/uploads/1/3/1/3/131380504/tunanefijid.pdfIn PDF document text
    • https://finirawex.weebly.com/uploads/1/3/2/7/132741073/zamegiraginulose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368970/normal_5ff3cd87466d0.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/fosogo.pdfIn PDF document text
    • https://togodinaxudare.weebly.com/uploads/1/3/1/6/131637070/7383376.pdfIn PDF document text
    • https://peneredexamoje.weebly.com/uploads/1/3/1/4/131407565/nopijob.pdfIn PDF document text
    • https://bumovewadenol.weebly.com/uploads/1/3/5/3/135318567/sutomaruluxoxe-kuvotikozura-musosukumod-lozototuxuregi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/neon_genesis_evangelion_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/83551365372.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/91248671702.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/4305587669.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/posiwozam.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/bsc_nursing_odisha_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/how_many_calories_are_in_a_dunkin_donuts_iced_coffee.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/16948969469.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/examples_of_criminal_justice_system_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/70249524780.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/reticular_formation_brain_regions.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/39202105438.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10291 6188 bytes
SHA-256: 4f3d28de525b1018dfcbf434137228435bcb17d66aad55209d1e54b8ef6ccfc4
font_01_sfnt_off0001175e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1175E 14676 bytes
SHA-256: 6310b60b8a620a31b4dbf26beb73ed9cb6b1e533f40e23436ad7b9a8d0e983f6

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