Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecde3f32696e1536…

MALICIOUS

PDF

70.6 KB Created: 2021-02-15 17:10:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7542e13a651b0db701b92fd17f2bd69 SHA-1: 84cba279f1ce6365a0d83fe9d9f6a9ca6c68b280 SHA-256: ecde3f32696e1536fc97131f631846d7dc0f24fc58a388bd61bb2a365b2dc32c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wix?keyword=soulsilver+safari+zone+guide PDF link annotation
    • https://pasetesosetoje.weebly.com/uploads/1/3/0/7/130775590/supunuliwotubar-botutameputi-wunukunujowi-jaditigewukuxaj.pdfIn PDF document text
    • http://jibesikore.iblogger.org/interstitial_lung_disease_guidelines_2015.pdfIn PDF document text
    • https://bijawodit.weebly.com/uploads/1/3/4/8/134883407/rudufurefur.pdfIn PDF document text
    • https://xawawamofolapus.weebly.com/uploads/1/3/1/4/131436997/6941587.pdfIn PDF document text
    • https://lamuwopinu.weebly.com/uploads/1/3/4/6/134632291/buvizajusemov-petisevene-palerap-vetozeforineta.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://senakebuna.epizy.com/vimumoreraxez.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/mejake.pdfIn PDF document text
    • http://tejusadesivuti.epizy.com/cisco_anyconnect_mac_high_sierra.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/lozagimejuduzakipiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/59553137627.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/new_gems_english_reader_class_7_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/97504947281.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/goroxaradu.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/boogie_man_blues_violin_1_sheet_music.pdfIn PDF document text
    • http://zusirana.rf.gd/mapemafilalokizol.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/wepiwolovipewivez.pdfIn PDF document text
    • http://vivimaga.epizy.com/72551282281.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_off0000d801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD801 5288 bytes
SHA-256: c1bba7a7cfd76ef7523118bca7a30e0e5f1aaadc83548afd02d250b0ef8071e5
font_01_sfnt_off0000ea1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1B 10456 bytes
SHA-256: 37144154bc787916c5e3274f267abba7d2774ac3a3832f01ac613b21c12c3998

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