Malicious PDF — malware analysis report

Static analysis result for SHA-256 986c77cfedc12e18…

MALICIOUS

PDF

76.9 KB Created: 2021-04-08 08:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 54740dae495aa9c98282cc787d6176c4 SHA-1: 9417cd7268d716246cba900fc1fc71492f749e94 SHA-256: 986c77cfedc12e18a9c36d4c55a519c792473369af49f049795e7b19d4f037df
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and is flagged as a phishing/malicious PDF by ClamAV and an ML classifier. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Vw repair centre near me'. The presence of multiple unknown URLs, including one that appears to be a direct link to another PDF, indicates a likely attempt to redirect the user to a malicious site for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://nipisod.ru/strik?utm_term=vw+repair+centre+near+me PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490539/normal_605ef37012185.pdfIn PDF document text
    • http://dlkmvkoenv.info/bisivetalobewobe7sp0s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_605f9bbfcdda6.pdfIn PDF document text
    • http://iuts.space/pebewigujasanavizerdhaih.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://kostlike.site/police_request_cctv_footage_form5ea67.pdfIn PDF document text
    • http://gbarb.me/mean_arterial_pulse_pressure_calculationsg62u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415077/normal_5fd9a1cb46a1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455207/normal_5fcc8175ec194.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_60209ea8b5613.pdfIn PDF document text
    • http://tefosewun.22web.org/fenujun.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/lazolu/wwe_3d_games_for_mobile.pdfIn PDF document text
    • http://gonapubofolok.epizy.com/how_to_repair_kenmore_dryer_timer.pdfIn PDF document text
    • https://9e1e9198-0fe7-4103-8084-fdcc6befb8d5.filesusr.com/ugd/2f7815_dcea1db343054c058182abe9fa68f6fa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/voxulija/ruwifovovulisapiv.pdfIn PDF document text
    • http://lepoxas.rf.gd/27503555255.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/iata_agent_code_format.pdfIn PDF document text
    • http://sarupisegov.rf.gd/what_position_is_best_for_menstrual_cramps.pdfIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_96537e8a281143f8885d90cf73ddee14.pdf?index=trueIn PDF document text
    • http://kitoxez.epizy.com/83316051190.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/lineage_2_revolution_class_guide.pdfIn PDF document text
    • http://dexegesen.rf.gd/lasko_box_fan_replacement_feet.pdfIn PDF document text
    • http://lamuzanumezaw.rf.gd/nexevefasivizo.pdfIn PDF document text
    • http://zupotid.epizy.com/856140428.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_off0000eebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBE 4928 bytes
SHA-256: fed1c8eb173a9b7b7280fe104a581a65007aaff5b2dd6a4ffa92e5fd622af379
font_01_sfnt_off0000ff82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF82 10980 bytes
SHA-256: 9ae9a491e89344b41b935226eb7d0e8e9c0c1f54fefd7697337c468d8c7f6e88

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