Malicious PDF — malware analysis report

Static analysis result for SHA-256 be74ff094010616a…

MALICIOUS

PDF

73.2 KB Created: 2021-02-14 05:08:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2a91aa767b61e2e3bf47ee980bcd8393 SHA-1: c5c36e98dca9b457042158f386a9456fcb1e36ec SHA-256: be74ff094010616acd645eb9cc07979a9da79decfa65fd4ee9a39a0855463d20
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/123?utm_term=how+to+read+tarot+cards+book+pdf PDF link annotation
    • http://verifybadgehelp.com/byod_device_policy_templateexyxf.pdfIn PDF document text
    • http://leadtop.co/cloudy_urine_pregnancyuw6q9.pdfIn PDF document text
    • http://mini-cam-v2.club/speed_car_game_unblockedjr3vd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_5fdc6c2d2250b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411001/normal_5ff97ecc935be.pdfIn PDF document text
    • https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/da6a5a.pdfIn PDF document text
    • https://wugoxuvalego.weebly.com/uploads/1/3/4/0/134017666/wefovel.pdfIn PDF document text
    • https://jagusidenoz.weebly.com/uploads/1/3/4/9/134902343/nekelidakuzafezun.pdfIn PDF document text
    • https://linonojito.weebly.com/uploads/1/3/1/3/131380720/8483445.pdfIn PDF document text
    • http://community-day.ru/plan_dentrainement_half_ironman9fxi7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_60126368c8356.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/sixenogafopoj/66198414403.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/server_dell_poweredge_r230_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/housing_affordability_crisis_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/arnold-_chiari_malformation_type_2.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_off0000e21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21E 5376 bytes
SHA-256: c873e12dfc0b35a036a927aca3e30439791a37de947214d4729cb9a5824e2f47
font_01_sfnt_off0000f47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47D 10364 bytes
SHA-256: 8166c170550079f790308ba004f6247570ce3a9cbca45680c95de2e8083da1a3