Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e83611c9e966a4a…

MALICIOUS

PDF

93.0 KB Created: 2021-04-21 16:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 6d221ddfed9c8a3a567490bcf6317ec9 SHA-1: 3a7f2fd8f8bbb81ff7f50a5584b691c6333f0b3f SHA-256: 9e83611c9e966a4a076e9fea17e7b01b9657cb7883924a35b2763e08a0ad6c7a
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL that leads to a domain associated with phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a product manual, likely to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://mezovuduw.ru/strik?utm_term=toro+super+blower+vac+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461484/normal_606bd922b2bad.pdfIn PDF document text
    • https://cdn.sqhk.co/feledigowud/hawjbhi/prank_call_ideas_for_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/PPhjh2B/74999098210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491945/normal_5fd86f91c9115.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/takurugilij/echo_report_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/guia_de_lactancia_materna_oms.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/88424524936.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/60903024627.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/how_to_fix_a_riding_lawn_mower_carburetor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f43aa358-6906-4930-bac3-2e87565399e8/what_does_e_mean_on_a_health_o_meter_scale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58618559-3ebd-4404-abee-e4a92b095431/should_junior_high_be_capitalized.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/how_many_cups_is_1_lb_of_potatoes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a079c8-b65d-4b0c-ac19-ba0016ffcd01/buwijukisozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3180248-91bf-446b-aaf2-ed0a095cb568/26577944737.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/a_breviary_of_seismic_tomography.pdfIn PDF document text
    • http://bisavosimirot.rf.gd/xazidizusewusagabakogiper.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/leicester_southampton_match_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/what_genre_is_the_trials_of_apollo.pdfIn PDF document text
    • http://jafafikano.epizy.com/61292111969.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_off00012e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E08 5320 bytes
SHA-256: 8d18113152400fcf1ae53a45e2cd1fdd5d638b222d678292b264a8e9e4ea9686
font_01_sfnt_off0001401b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1401B 11748 bytes
SHA-256: b6126abab5678b87e2899a3468ef8af78120bb32ea7829e091799787c1adce87

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