Malicious PDF — malware analysis report

Static analysis result for SHA-256 252cfe365b0163c9…

MALICIOUS

PDF

68.4 KB Created: 2020-11-11 04:48:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d0be93cb1672d9ec14f8fb9f4346ef93 SHA-1: 502ce8cc4246032d121bdf9bd0f460351fc9cd8c SHA-256: 252cfe365b0163c92567c9b867d0b9ae9672bf6084343c50ccf865ded67368ff
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://trafficel.ru/aws?keyword=espring+water+filter+price PDF link annotation
    • https://pomitowu.weebly.com/uploads/1/3/4/3/134389192/b8c4f70.pdfIn PDF document text
    • https://narodejezagog.weebly.com/uploads/1/3/3/9/133988416/xukubidisegonapapij.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/kixogepekovip_kevipomerawo_lumeg.pdfIn PDF document text
    • https://lapebezufidasaz.weebly.com/uploads/1/3/4/3/134316617/89b481609e9.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/vifusupegiza/hot_pocket_cooking_time_pepperoni.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/wifi_hack_password_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/duzek.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/katerobukawupu.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/39119101967.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/56033099730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f307bbbd-6196-4a01-82cd-64f76b287bee/38023305714.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/thank_you_meme.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_off0000ced2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED2 5232 bytes
SHA-256: 0394de057d79972e8c18f663117a47470a0681a4c66efd28d458d67ddd6f8dcc
font_01_sfnt_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 10732 bytes
SHA-256: df0a7a42f6235b648f5839aeecf298bde3ca8d365279dd2ec730d5728e479ee7