Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45098bad03cd0c1…

MALICIOUS

PDF

69.5 KB Created: 2020-11-13 07:17:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 65e2f1374364bf8e3cc3510147bf205e SHA-1: 021bac60863759f8e31d7172d8e083058f1a1205 SHA-256: c45098bad03cd0c1b728d58e7677c9020c3db0d02b8492a180e029e546c76054
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://ggtraff.ru/aws?utm_term=hollywood+horror+movies+in+english In PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/tezili-siforajot-wiran-tenujogome.pdfIn PDF document text
    • https://runevivapubate.weebly.com/uploads/1/3/4/5/134595370/buwagito_nalonunofip_suzezexa_lapetufewuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c27302d0-8d2c-4c06-9012-0dafb0857583/zisali.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/zofudabumapetimezave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4211f78d-9ae2-4be6-ac57-07824f4318d3/semawiriv.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/43505972975.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/java_language_tutorial_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/nijasus.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/pamimuturafetek.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/4278059654.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/monroes_motivated_sequence_outline_recycling.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/mafia_3_strategy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/484c177d-e310-4d93-83fc-12d5f343907a/steve_jobs_timeline.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/futurugexutiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9518744b-55b9-409d-9d44-50dd8cfc6ee3/26687335067.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/libowekuzirowotagekama.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_off0000d2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F3 5244 bytes
SHA-256: 7717e5a4388959054de61b52ab0646a235fd88fc3156556aa82c7336e323a1f8
font_01_sfnt_off0000e4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BC 10616 bytes
SHA-256: 4318a457452c535c8a50c061a18a266380807da2fdd07a451bdafbfaa453acd0

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