Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb8c56ad3ed88e9…

MALICIOUS

PDF

79.8 KB Created: 2021-03-15 19:29:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: be0c31b3451c17671b0ef23370055178 SHA-1: 25885021d12422fa64d7bb6024e51115e0525305 SHA-256: 1eb8c56ad3ed88e9423ddb4718ee19880e1ccc2afd7a826401af25a93f555f1b
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. Heuristics indicate a high likelihood of phishing and malware, with ClamAV specifically flagging it as 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the overall structure strongly suggest an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://gimoguvi.ru/wix?keyword=unblocked+games+bmx+extreme PDF link annotation
    • https://cdn.sqhk.co/mekurapiw/ighjhmG/car_vs_bike_racing_game_download.pdfIn PDF document text
    • http://feedbacrnz.space/pubarevenpgkn.pdfIn PDF document text
    • https://vulopinuvi.weebly.com/uploads/1/3/1/1/131164419/repopif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465685/normal_60180c300a54c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484359/normal_6046b6d8b5bb3.pdfIn PDF document text
    • https://cdn.sqhk.co/piwoputi/ghiijcm/polalulesuxuze.pdfIn PDF document text
    • http://inglassrus.ru/9517431458966uxs.pdfIn PDF document text
    • https://cdn.sqhk.co/duxevowoli/Okjechg/26050897258.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvaratuji/4HVFice/benetton_watches_online.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/bexGQ0M/assassin_s_creed_identity_offline_apk_obb_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bulenupulabo/hefSvhW/kung_fu_cat_tiktok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377095/normal_5fdd9516a541f.pdfIn PDF document text
    • https://tiwebusimevadeb.weebly.com/uploads/1/3/5/3/135346158/lovexivoregu.pdfIn PDF document text
    • http://firstdoctor.xyz/nobivebapotunekospj.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/frZdia4/52222025510.pdfIn PDF document text
    • http://triple-doska6.club/chat_simulator_undertalep2ths.pdfIn PDF document text
    • http://apkweb.net/3279552113069q6k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_604e1e31d61d6.pdfIn PDF document text
    • http://reduslim-shop.website/lufojuzq7j10.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/WUKdFjg/clash_royale_hack_apple.pdfIn PDF document text
    • http://keto-s1.com/how_to_do_instant_alpha_on_wordzu72z.pdfIn PDF document text
    • https://sukorajonivo.weebly.com/uploads/1/3/4/1/134108587/38ea0a1d74c7b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470836/normal_60183f6759df0.pdfIn PDF document text
    • http://muzoc.xyz/panasonic_dmr-ez48v_specs5tpr9.pdfIn PDF document text
    • http://sbrf.link/why_is_my_ac_light_blinking_in_my_camry9icb3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f5f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F6 5520 bytes
SHA-256: 8147b0dc58dd6874d72d34d27cbfac91a2c33a9c4939db5367ee8a837c8f32a3
font_01_sfnt_off000108ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AE 11788 bytes
SHA-256: 8e8a1062523842dca3b0d9325ce4ad44656a0fc123cd58701805d6d7743cfb3e