Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec041fbb8cec2e9f…

MALICIOUS

PDF

72.6 KB Created: 2021-02-18 12:37:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cab968698f9205a7368fe93aeecde918 SHA-1: 1a0abda7c4f0b2784d1400334dd2ec4b9bd6927d SHA-256: ec041fbb8cec2e9fbc1306b8f0752cecbbf521b49b47a062cabb2ca611f1999e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=call+of+duty+mw3+apk+obb PDF link annotation
    • http://opsnatur.fun/watch_venom_online_free_putlockersqu1cw.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/k1jageB/98776096400.pdfIn PDF document text
    • http://ing-jobs-opportunities.com/966947933111gqcn.pdfIn PDF document text
    • https://cdn.sqhk.co/junigofulum/aigiKRg/droidcam_obs_apk.pdfIn PDF document text
    • https://rilawexiretik.weebly.com/uploads/1/3/4/2/134267086/rorefogotese_zodivukutexuvir_wokuwujen.pdfIn PDF document text
    • http://reduslimitalia-official.website/simple_payment_slip_template7wxrs.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/ja3jdii/origami_halloween_ghost.pdfIn PDF document text
    • http://ecoservice-vlad.ru/568014056154hxc2.pdfIn PDF document text
    • https://cdn.sqhk.co/beratinuga/ighj3by/bezizuzedajol.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/e2hhTxd/joxunotemopukesi.pdfIn PDF document text
    • https://beteviduzil.weebly.com/uploads/1/3/3/9/133986260/zadamugoxo_rokemiwiwelokuz.pdfIn PDF document text
    • http://sarhello.online/sugetefarixisabokux3vq00.pdfIn PDF document text
    • https://cdn.sqhk.co/nezerozara/3tGiUp2/towebokujezoturidudewejur.pdfIn PDF document text
    • http://afracheat7.xyz/words_with_s_h_o_o_t_eieod7.pdfIn PDF document text
    • https://cdn.sqhk.co/mepowokugo/hagi0hf/gasirujogivasamigurube.pdfIn PDF document text
    • http://parralax.net/badaga_video_songs_freew7lr8.pdfIn PDF document text
    • http://whitecheat.xyz/nuvunalabotutpp2qn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dufexisoji.rf.gd/cheat_codes_gta_5_ps3.pdfIn PDF document text
    • http://fujuresaw.epizy.com/88284116921.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_off0000d846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD846 5380 bytes
SHA-256: 0c793667c54b9f5e0ffdf6d2a4610e2f49da480e46649587a4ba9d83cd046d5c
font_01_sfnt_off0000eaa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA1 13396 bytes
SHA-256: 84c1e71f259bffb4558ec57c4a7d351acdfe12fabb120e13ecaae7e3eda180eb

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