Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02384d9ee779caf…

MALICIOUS

PDF

76.7 KB Created: 2021-03-27 18:58:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13c5cfa43f4d65e67a9ef58f870e968b SHA-1: 76dbec2b2a6af65893f527389038ef2d9f7a9074 SHA-256: d02384d9ee779caf05cb3a26a3ff6f077d4c40b7e2738ab82521ddc422f77dc3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, with one prominent URL pointing to a suspicious domain ('soxebez.ru'). The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the nature of the link farm suggests an attempt to redirect users to malicious content, potentially exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://soxebez.ru/award?keyword=atrial+septal+defect+adalah+pdf
    • https://cdn.sqhk.co/goluxewimabu/Vzvjgxs/gezemer.pdf
    • https://cdn.sqhk.co/liwewajawab/hghjghj/goblin_character_sheet_5e.pdf
    • https://cdn.sqhk.co/zimopiroxab/bn0ibib/fusionner_des_fichier_en_ligne.pdf
    • https://cdn.sqhk.co/lisesemafo/ibBiaif/28869568695.pdf
    • https://cdn.sqhk.co/wofikubid/jihfsgf/automaton_word_in_a_sentence.pdf
    • https://cdn.sqhk.co/ritasuxa/hggc75r/38367176680.pdf
    • https://cdn.sqhk.co/zevijevam/gcAjcjj/62679127884.pdf
    • http://astropsychology.site/60762184850akmn0.pdf
    • http://ig-mediateam.net/jowesalomibutuwojatobikog7nstx.pdf
    • https://cdn.sqhk.co/zobazulibes/q1jgDhg/ye_mulaqat_ek_bahana_hai_song.pdf
    • https://cdn.sqhk.co/jedelamodafa/bFjigjL/boy_band_k-_pop_idol_mod_apk.pdf
    • https://cdn.sqhk.co/zitedefew/dhfbNhg/starfall_numbers_apk.pdf
    • https://cdn.sqhk.co/kezixowog/czghhem/elementalist_gloomhaven_painted.pdf
    • https://cdn.sqhk.co/dogatefi/2K3Whgj/twitter_download_app_store.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gupojakami/lakalibosijivudawetam.pdf
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_b3e84ae1692a40c09773dcdf92d90820.pdf?index=true
    • https://s3.amazonaws.com/dofufiri/zixitapogeweduzos.pdf
    • https://s3.amazonaws.com/nokiva/sex_education_season_1_episode_6_soundtrack.pdf
    • https://b860438a-ced3-4995-86f2-ad9a24e3f15c.filesusr.com/ugd/938eb2_3610f42045c946d5b785b0fe41cf53ab.pdf?index=true
    • https://s3.amazonaws.com/tarizirefevifab/65844483592.pdf
    • https://502f924d-676a-41b3-8220-87c01882f600.filesusr.com/ugd/5a20bb_57c4f73495b94f118abc0e97d4ec5c9b.pdf?index=true
    • https://s3.amazonaws.com/sakaburepagase/46646590419.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_off0000f037.bin
03d41de97d9c1267ac6bcdf42f8bd562edaa6dd8cfead00fd833859c3ce0391d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF037 5232 bytes
font_01_sfnt_off000101fc.bin
0901cfde7ac27a814fe6bfa62b3090fdabf2bfb2a2758987dc5731ca9099d828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101FC 10380 bytes

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