Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a62798939a496c3…

MALICIOUS

PDF

42.1 KB Created: 2020-11-05 21:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 67ca6998f6c82771ccd3bcdf5e74edd0 SHA-1: 0a41c353925af3ef092f53ac6eb3862a4614af4c SHA-256: 1a62798939a496c38d95396d51fcbb247c38148305ddbe3ce76be517dfe18ec3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffking.ru/123?keyword=kingroot+apk+download+ios In PDF document text
    • https://zavebunerug.weebly.com/uploads/1/3/4/3/134358754/nuxipubapajok_subafawubunurit_kupati_tagenixet.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/063c1.pdfIn PDF document text
    • https://dozasasakebo.weebly.com/uploads/1/3/1/1/131164234/7519535.pdfIn PDF document text
    • https://wowifowukanu.weebly.com/uploads/1/3/4/6/134634936/bimumibumemozu.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/letekigu.pdfIn PDF document text
    • https://wigapekowuv.weebly.com/uploads/1/3/4/4/134488511/xadiwureruniji-potabevaketig.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/d059b4cf2fc62b0.pdfIn PDF document text
    • https://vabebixeteguju.weebly.com/uploads/1/3/4/2/134234611/rogopuziboxopitija.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/raberuvemosuki.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/fulomufimikim/29803150203.pdfIn PDF document text
    • https://s3.amazonaws.com/kimoweworape/kafka_the_definitive_guide_code_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17755433-98fe-46d7-aefb-abfbe57cff85/nuvev.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/rbind_vs_cbind.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0e9ff3-8e60-4c5d-abf6-218ca773f1bc/pawud.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/cylindrical_grinding_machine_specification.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_off000065ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 5252 bytes
SHA-256: e507c9221360cbcb76e81f97b627fb04469f2d27678bec2ef95303d5ffbf6cfc
font_01_sfnt_off000077ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77ED 10524 bytes
SHA-256: 7d6a5e6eadc175c88b37a8b663666e250bacc277172f91c16f2d66d3b44e1ec7

Open this report in the interactive analyzer, or submit your own file for analysis.