Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8c3219e1e71dbe…

MALICIOUS

PDF

65.1 KB Created: 2021-02-17 14:12:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1d9adf58f162f4e5fa8ce6265a16fa30 SHA-1: 49a2c5ee707e54cef119311541483eacb3a4213e SHA-256: 9e8c3219e1e71dbee146564f08d0469b609f2cf7fa731325741cfc30607a484f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=gt+avalanche+3.0+for+sale In PDF document text
    • https://static.s123-cdn-static.com/uploads/4464521/normal_5fefa7e284bc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454290/normal_5fd27f9a8e487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530846/normal_602cac066d1c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495839/normal_5fca2e5cdff77.pdfIn PDF document text
    • http://kubevevof.iblogger.org/innocent_witness_korean_movie_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529149/normal_602c68dbebf45.pdfIn PDF document text
    • http://xutarima.22web.org/how_do_you_describe_tone_of_voice.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/ggbigWu/tagafekep.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/pisedij/behavioural_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/nitrogen_containing_heterocyclic_compounds.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/93280953886.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/zijapag.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/82411560144.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_off0000b5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5DA 5140 bytes
SHA-256: a13a713c6ceda30ddb7df53bea0af4b66ad8583cfc1505c617e6f91d41dc64e9
font_01_sfnt_off0000c74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC74D 9940 bytes
SHA-256: 4f171930d709f5c774a54e9457b270d7499a96bdf766eac0adc6a71e2c690a98
font_02_sfnt_off0000e96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e