Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d43adbd5e794a2…

MALICIOUS

PDF

67.9 KB Created: 2021-02-13 20:30:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 43e36f37e4211093ab3e2432f18f4418 SHA-1: e2277b0e5e7caf3ae7946a37377f754a960926fb SHA-256: f7d43adbd5e794a2abf020926fd3344c24ddc65474753b510b615ee49efc5023
254 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
  • 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.
  • 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.
  • 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/aws?utm_term=free+adobe+animate+templates In PDF document text
    • https://tomewulasanuful.weebly.com/uploads/1/3/1/6/131637374/vesewa.pdfIn PDF document text
    • https://lelebozo.weebly.com/uploads/1/3/4/5/134578107/7085884.pdfIn PDF document text
    • https://motawifuliwax.weebly.com/uploads/1/3/3/9/133999363/2ef88be00e3966.pdfIn PDF document text
    • https://zegilaritapedu.weebly.com/uploads/1/3/1/4/131438092/f1d4b914523f7.pdfIn PDF document text
    • http://7lessons.fun/lobos_vs_vampiros_pelicula_completa4i5ng.pdfIn PDF document text
    • http://bigtittybella.com/lotenobisevukixoym6am.pdfIn PDF document text
    • http://xokoden.22web.org/18275486190.pdfIn PDF document text
    • http://agencymedia-ig.com/tortora_microbiology_13th_editionu85fa.pdfIn PDF document text
    • http://zefakelilivaxo.iblogger.org/string_format_double_to_int.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/pujirageg/funny_cartoon_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/dafuwivolefuvazi.pdfIn PDF document text
    • http://kipinoda.rf.gd/runitiroruwowevir.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/division_2_tu6_build_guide.pdfIn PDF document text
    • http://wawuzir.epizy.com/speed_deoxys_raid_guide.pdfIn PDF document text
    • http://pebimomedunuzux.epizy.com/26661952068.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/468982791.pdfIn PDF document text
    • http://juxawewoguseku.epizy.com/70102368122.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/dewevisokevanilezanugi.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_off0000d109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD109 5200 bytes
SHA-256: bd7f443dcc0555723943baa902132545e32ba8748ce6b7c3572856e70521f541
font_01_sfnt_off0000e299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE299 9396 bytes
SHA-256: 3b31dce5ab1efa51d6408b748fb2099b691f8f68ab9f87f6624d3a3d05a3ea23