Malicious PDF — malware analysis report

Static analysis result for SHA-256 4343b460ba238962…

MALICIOUS

PDF

66.2 KB Created: 2021-02-11 18:52:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4879f72563de0f7e0114a576b37eb177 SHA-1: 885e4357b41ed692fb61930624bc5f4b2e63e939 SHA-256: 4343b460ba2389622b3fb69943d95de6efc50a3028fb2e4819c97f4a32737920
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=graco+double+buggy+manual PDF link annotation
    • http://pubggaming.online/mcoc_variant_2_guide80611.pdfIn PDF document text
    • https://puvugopusu.weebly.com/uploads/1/3/2/7/132711965/tetazolifim.pdfIn PDF document text
    • https://gedesinikus.weebly.com/uploads/1/3/5/3/135323437/836cb70d22e5.pdfIn PDF document text
    • https://cdn.sqhk.co/samanugutu/iie8Ijd/tawonaxelinabekufurawa.pdfIn PDF document text
    • http://b4shop.icu/ikea_catalogue_2020k11ut.pdfIn PDF document text
    • http://zeropium.com/zurenezozixaxesirdymc.pdfIn PDF document text
    • http://ukranews.site/hallmark_tv_app_ukt5mym.pdfIn PDF document text
    • http://delifeschool.com/rolling_hero_2_cool_math3479n.pdfIn PDF document text
    • https://cdn.sqhk.co/runetonorox/T4ygdie/superkids_online_fun_sign_in.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/bnD9ie5/45112172637.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409813/normal_60040652abd3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/toxic_algae.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/tedokugidiv.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/wegikumonukujavidori.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/uc_browser_free_vpn_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/mk_prestige_dado_trunking_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/binawilegikibakisofo.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/wemix.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/thomson_reuters_cost_of_compliance_report_2019.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDF 5108 bytes
SHA-256: 1fed37329fc58519d4920df1c2620612c48278a28712dde26c0bf2deb0b89861
font_01_sfnt_off0000cd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD21 9512 bytes
SHA-256: dc65edd81ef940183a4f2bfd53c14e1545a600bbaed4400d9c2b40fbb0b2ab30
font_02_sfnt_off0000ed9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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