Malicious PDF — malware analysis report

Static analysis result for SHA-256 092349081ca5b41c…

MALICIOUS

PDF

82.7 KB Created: 2021-04-27 19:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f999fa91cee0c816c7b45c9dabe132bf SHA-1: dda8bf94ee40b4fc0d135ebf8bfb95b8bb786b3d SHA-256: 092349081ca5b41c7cc454ad7a1c763894519d25addf18de142b2e4c8e0abbb5
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of embedded URLs and the nature of the heuristics point towards a phishing attack designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://zajinet.ru/strik?utm_term=how+to+service+dometic+air+conditioner PDF link annotation
    • http://xazusifiwo.iblogger.org/moviescounter_bollywood_movies.pdfIn PDF document text
    • http://nopotaz.medianewsonline.com/canter_assertive_discipline_model.pdfIn PDF document text
    • https://cdn.sqhk.co/tumitibira/hiSjiif/50412648773.pdfIn PDF document text
    • https://cdn.sqhk.co/vujaderaz/3hiyieo/nebutaz.pdfIn PDF document text
    • https://cdn.sqhk.co/kutogudofi/hVgh1Cq/japibibuk.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/igii8ih/super_penguin_league_celebrity_game_2018.pdfIn PDF document text
    • http://zifeladawu.scienceontheweb.net/machine_learning_techniques.pdfIn PDF document text
    • https://cdn.sqhk.co/wotabefej/mjdc9hg/68460904183.pdfIn PDF document text
    • http://gifinibufenatar.medianewsonline.com/47337236405.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sevoga/pimaripuropobagetoluw.pdfIn PDF document text
    • http://wuxojawe.epizy.com/96241941484.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/zeguwunomodokogoradi.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/is_adt_reliable.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/giwolujajug.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/92197797156.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/answering_machine_greeting.pdfIn PDF document text
    • http://mujujum.epizy.com/autocad_blocks_free_furniture_2d.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/violin_piano_duet_classical_sheet_music.pdfIn PDF document text
    • http://sikejilewiz.epizy.com/blank_december_2018_calendar_template.pdfIn PDF document text
    • http://jiguluvosasibun.epizy.com/37384502837.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/tamil_movies_2017_list.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D2 4956 bytes
SHA-256: e8252d5498aac7d8cdce3ae548f489660cfca0d7d49d327918aed7828a1f1f8a
font_01_sfnt_off0001099d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099D 11064 bytes
SHA-256: 347ca7f0f694a926a4f11917ecac5a17e022f910d1edee038ce2f9cc0e4c4b9b
font_02_sfnt_off00012f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F74 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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