Malicious PDF — malware analysis report

Static analysis result for SHA-256 202dad05ebc0945a…

MALICIOUS

PDF

43.4 KB Created: 2020-11-09 15:42:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 59b841c2c015a3bb89842c4d8f9afc58 SHA-1: 0cd4f1d8d6635caeaced883423363a6ab6ea5ca1 SHA-256: 202dad05ebc0945a4d7aeda0f27e39742f4b45256889fabc44f978b54bde48bc
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/strik?keyword=first+alert+fa260+user+manual In PDF document text
    • https://mexugagerow.weebly.com/uploads/1/3/4/4/134482965/wefulawarexujabo.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/3274198.pdfIn PDF document text
    • https://mesovozilepako.weebly.com/uploads/1/3/4/5/134588792/fejet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zufojadibi/21540780037.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/max_life_online_term_plan_plus_brochure.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/kaspersky_reset_trial_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/o_hare_airport_directions.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/venuwuwimejuviwigipa.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/vepirogifa.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/snapchat_apk_file.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/dubai_marina_map.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/nifuw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0A 5068 bytes
SHA-256: aa55cf3e31d2bbb800fe1c761f454efe2541e04287fa4e2e9219d436dac8abcb
font_01_sfnt_off0000701b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701B 10100 bytes
SHA-256: 663ea2901fd2f8ad4614fa2c2d0f2ab77bb683c0b510fe80dfa2d879c9d3dded
font_02_sfnt_off000092c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f