Malicious PDF — malware analysis report

Static analysis result for SHA-256 97387e9be41cb9e5…

MALICIOUS

PDF

73.4 KB Created: 2021-02-21 07:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 710cd243a2c2aa4dc4dda97c1120ff81 SHA-1: 05f88f6e41566fbd29530d6ed3a228f69d11e4e2 SHA-256: 97387e9be41cb9e57eb8a055340ee9b89a37d0c77ed42aeb6204e83d6a6dfbcb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=what%20is%20the%20best%20cordless%20leaf%20blower%20vacuum PDF link annotation
    • http://getcabinets.xyz/warlock_wowhead_classic_guidecpkss.pdfIn PDF document text
    • http://thrivewebs.com/53998453432yqqc3.pdfIn PDF document text
    • https://merejeweja.weebly.com/uploads/1/3/1/3/131381112/5194006.pdfIn PDF document text
    • https://zazobowelukoki.weebly.com/uploads/1/3/0/9/130969428/ab8883b.pdfIn PDF document text
    • http://afracheat6.xyz/2990502249dxlyr.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/wogiratot-kofixo-pusosikobupa-xitigeni.pdfIn PDF document text
    • http://ebay-coupon.ru/kifupetukimulirss6av.pdfIn PDF document text
    • https://fivixevovisobav.weebly.com/uploads/1/3/1/3/131380347/5826664.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zodutak.rf.gd/dough_sheeter_belt_hs_code.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/catvision_set_top_box_software.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/software_requirements_specification_format.pdfIn PDF document text
    • http://tosogaxaf.rf.gd/cataloguing_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/xofeva.pdfIn PDF document text
    • http://pakatikik.epizy.com/on_my_way_lyrics_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/crayfish_dissection_answer_key.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_off0000e243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE243 5568 bytes
SHA-256: 1d95085bfd8d1032b5ab08746101aa8bc7602b115da48944f21ff0db366f085d
font_01_sfnt_off0000f51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51D 10352 bytes
SHA-256: 6140df452c72fcf5fe60c54326426364619d2c95ad7a3767ca9cbc1cb13ef6cc