Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1e5d60c0733907…

MALICIOUS

PDF

68.4 KB Created: 2021-02-12 08:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7e29da8c1ca1acb0bb7400d4965a95d4 SHA-1: bc3f1a445d7065d47211f6f9f7c1878a905b1f6f SHA-256: dd1e5d60c07339073caf5dae7003d5f46a29d382eb95b95ae2bbb6159f7a0982
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://druttle.ru/wix?keyword=drawing+angles+worksheets+grade+4 PDF link annotation
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/3262895.pdfIn PDF document text
    • https://zekaxuwamawebi.weebly.com/uploads/1/3/5/9/135961115/sunemu.pdfIn PDF document text
    • http://taptopbot.com/printable_self_certification_form_nhsjtmmr.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/jakuw.pdfIn PDF document text
    • https://rifusefabizavi.weebly.com/uploads/1/3/2/3/132303317/pidagodefiko.pdfIn PDF document text
    • http://arevakar-travel.com/paradise_california_bowling_alleyw3pxc.pdfIn PDF document text
    • https://biruwilajefi.weebly.com/uploads/1/3/4/6/134651793/senikaza_pepoxu_roxupoz_modosijobiguman.pdfIn PDF document text
    • https://damanula.weebly.com/uploads/1/3/1/8/131856109/4184331.pdfIn PDF document text
    • http://civiliscmq.online/siletofx0lsl.pdfIn PDF document text
    • https://nowepokuvex.weebly.com/uploads/1/3/2/7/132740584/3453125.pdfIn PDF document text
    • http://fridgeservice.ru/baldurs_gate_dual_classxoirc.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/napisakaluja/adaptation_in_animals.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/afterglow_bluetooth_headset_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/45571934136.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/guideone_car_insurance.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/amazon_app_for_android_2._3._6.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/93933780647.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/49723992496.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_off0000cf5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5B 5332 bytes
SHA-256: 910cc24bd758dabb080f71737ba9d24190c949812e9bd7926a7517efbba3a556
font_01_sfnt_off0000e191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE191 10180 bytes
SHA-256: 794c2281004f538c6ccf1a3b6741e68ec9fb6e1228b9579807758c90a702153f