Malicious PDF — malware analysis report

Static analysis result for SHA-256 6843fe84d26ae1e4…

MALICIOUS

PDF

73.9 KB Created: 2021-02-16 12:01:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 487c4287c87b7dd5d7baa93796475fa8 SHA-1: db7e55393f5728f8e704c83c24c76ad15a714458 SHA-256: 6843fe84d26ae1e41338e09afa8c6499e385eda3ba65a6089ed7241fea37b29e
194 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=on+the+road+again+movie+with+willie+nelson In PDF document text
    • http://helpforteam.com/the_crucible_questions_and_answers_act_1r3yng.pdfIn PDF document text
    • http://cyberlife.store/97784550262wlxl4.pdfIn PDF document text
    • http://ita-bio.space/sky_warrior_clinicjjmcy.pdfIn PDF document text
    • http://itfamily.info/199760017693pkv1.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/y1gcSqR/nifokomuzegilona.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/nick_foles_wife_sicktfalm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sedilipabowarad.rf.gd/11704254349.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/7596925248.pdfIn PDF document text
    • http://vatasinunevuto.epizy.com/42024311559.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/95289673841.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/norumanuw.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/41282263031.pdfIn PDF document text
    • http://pibasas.epizy.com/nfl_score_predictions_week_13_bleacher_report.pdfIn PDF document text
    • http://vajitefafuxuz.epizy.com/gba_emulator_online_multiplayer_android.pdfIn PDF document text
    • http://vavijirodujozi.rf.gd/amber_fort_jaipur_information_in_marathi.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_off0000d9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A9 5420 bytes
SHA-256: 082acc5c0513a25d7473004c5264ce4a3ef926caba339488343df6266790c16d
font_01_sfnt_off0000ebfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFB 15144 bytes
SHA-256: d3b7b50f44255e11bdfda7064619c6499e016a1c714c802e66e50c45ffe8ba71