Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d5ebea0419a0a57…

MALICIOUS

PDF

67.5 KB Created: 2021-02-15 00:50:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dd5a546d21b8b7ed89f1e40e2cf65677 SHA-1: 720181811c214eb8e21ab5696caee8ee313f27fa SHA-256: 1d5ebea0419a0a57bc3de7c23b1fe51f7f88c08f4264392a12dab80e6df391c5
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://seumenha.ru/wix?keyword=dwarf+druid+miniature PDF link annotation
    • https://dovavifedudefew.weebly.com/uploads/1/3/2/7/132710721/fesamekat.pdfIn PDF document text
    • https://merugerizun.weebly.com/uploads/1/3/4/3/134337850/5467794.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/ibijjdr/good_bucket_list_ideas_for_college_students.pdfIn PDF document text
    • https://cdn.sqhk.co/tozijizubu/jLuUJhy/top_100_golf_courses_in_the_us_map.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368979/normal_5fcd278c8d682.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413375/normal_5ffae19373757.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/hghahfb/boomerang_bet_cast_names.pdfIn PDF document text
    • https://fuwewarudizikip.weebly.com/uploads/1/3/4/6/134644733/xumadegebekuz-vimanaxoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426071/normal_5ff376bd52c74.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/Wib5QGc/best_race_tune_for_6._0_powerstroke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384831/normal_600d1d1dee5d9.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/PcmqieA/homemade_strawberry_banana_milkshake_recipe.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/zedudo/futolefinivubu.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/hungry_dragon_mod_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/horror_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/fire_hardened_mail_classic_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/58390436117.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/11676245374.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_off0000cbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD0 4936 bytes
SHA-256: 844ae2f7de20287d269abda246f9790226528d750a2ea1691c3e5ba3c1f4295e
font_01_sfnt_off0000dc9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9A 10588 bytes
SHA-256: 394a0361785c2179d7fa32e821627dd70bac67aeb981fb2b9ccb64159befbfaa

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