Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c5d2b91720a64d…

MALICIOUS

PDF

66.3 KB Created: 2021-02-21 04:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d8b7125d5e36144ffd1b5f97ed1ef65d SHA-1: e255ebb519b09cc434bbc8d9eb52ce6542ea742d SHA-256: d7c5d2b91720a64d3456e8969b854cd3714b5e7dbcebd4a12988713c531ad824
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://druttle.ru/wix?keyword=sulfur+metal+nonmetal+or+metalloid PDF link annotation
    • http://1yamal.space/xadafukepaputilqzlz6.pdfIn PDF document text
    • https://wixokaregojes.weebly.com/uploads/1/3/2/6/132681478/b23364106.pdfIn PDF document text
    • https://kogozodibivuf.weebly.com/uploads/1/3/6/0/136094397/ferotopavap.pdfIn PDF document text
    • https://cdn.sqhk.co/lusoxepero/IiiZjcZ/mutants_genetic_gladiators_hack_apk.pdfIn PDF document text
    • http://lagujegivupani.22web.org/99653197597.pdfIn PDF document text
    • http://bit7.top/770146731661qgbe.pdfIn PDF document text
    • http://detonic-deutschland.website/baxosebofurxajer.pdfIn PDF document text
    • https://zunodeni.weebly.com/uploads/1/3/1/0/131070331/8193317.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/fekife/canon_lide_110_toolbox.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/sample_enquiry_report_format.pdfIn PDF document text
    • http://puzexexaniledow.epizy.com/66761421486.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/cloudformation_s3_bucket_parameter.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/89817693498.pdfIn PDF document text
    • http://dofatolepe.epizy.com/would_u_rather_questions_dirty_for_guys.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/99881718626.pdfIn PDF document text
    • http://sojikavufor.rf.gd/mavakujizip.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_off0000c97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97E 4980 bytes
SHA-256: 47f6ff4c19926419b9a163d2001c42e4e17fd54fc820608498bbf7cbcadd250a
font_01_sfnt_off0000da51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA51 10020 bytes
SHA-256: 7f058325a38205be5c9dad4dd8b1d5d2734d740c474b9aecb75a5fae9cddc1de