Malicious PDF — malware analysis report

Static analysis result for SHA-256 49853129219bdde7…

MALICIOUS

PDF

74.9 KB Created: 2021-02-22 00:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 110a8a90a0d4fc2c8bd0d8203dba3aed SHA-1: b302a734b68a1a99523064ca86c3c6ffeb549cb5 SHA-256: 49853129219bdde7938836f81bccb77ee1cb1a75e278c45e4da1db0ad4dabaa1
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, many of which point to disposable domains and are structured as link farms, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a phishing site or download a second-stage payload. The document body, though heavily obfuscated, contains text related to Wi-Fi extenders, likely a lure to disguise the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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/strik?utm_term=how+to+set+up+msrm+wifi+range+extender PDF link annotation
    • http://lasns.fun/big_fish_game_manager_app_for_mac3z7qm.pdfIn PDF document text
    • http://ekzo-fruit.ru/summertime_saga_latest_version_android_apk2cx8b.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/gyggT4Z/76118353226.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/Giea3Si/train_to_gensan_mod_apk_unlimited_ducks.pdfIn PDF document text
    • http://garant-ritual.online/eyelash_extension_certification_course_near_mepwzqv.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/jBpQjaF/40775930856.pdfIn PDF document text
    • https://cdn.sqhk.co/zosaremarebi/gfih6vE/buzopixawidanixijoleta.pdfIn PDF document text
    • http://cucoupon.info/lagu_lily_versi_koplo_beny_sonatab26gp.pdfIn PDF document text
    • https://cdn.sqhk.co/nesadatifu/hiiOhie/download_ice_cream_2_horror_neighborhood.pdfIn PDF document text
    • http://birjand.design/tv_remote_not_working_after_battery_change85g28.pdfIn PDF document text
    • http://forsage.pw/toyota_forklift_parts_dealerkzkfd.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/RjdCSRi/vedixesifubis.pdfIn PDF document text
    • http://getyourcredit.info/anhalteweg_berechnen_nach_der_faustformelf9g23.pdfIn PDF document text
    • http://front-glass.website/93958916007tuf5j.pdfIn PDF document text
    • https://cdn.sqhk.co/tabuguran/TijMhh5/octopus_vs_squid_ink.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/gajakelegeza/oru_kalluriyin_kathai_movie_songs_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/vawutudemusid.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/pirejoweragezalo.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/nelesabolukemawexiwuduzur.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72F 5452 bytes
SHA-256: 396df304caa92e00d24eda7167dc125f6210bb39ce587647d990d5cfa2103074
font_01_sfnt_off0000f9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B7 10656 bytes
SHA-256: d689c1955d1e107cf73cd4c5f57ea2819ce9c8b14401fc395157d11aa2d24a66

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