Malicious PDF — malware analysis report

Static analysis result for SHA-256 68662ead0f207a23…

MALICIOUS

PDF

64.5 KB Created: 2021-02-26 09:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 57528f1913b276212f0b36a4cf3ae1ff SHA-1: 99af5eeeef9abf33678558d3c80fb6feb12a0979 SHA-256: 68662ead0f207a2355ad98543273193a9a2b5b822ff0868c534fbf5566cb4df9
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/wix?keyword=bill+nye+genetics+worksheet+answers In PDF document text
    • http://kujunat.medianewsonline.com/gapexefalixer.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/nioh_dragon_swordhv3ry.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/rasevupebe.pdfIn PDF document text
    • http://odemebayisitrafik.com/puxakaladakogumilimitoz4s8sc.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/what_is_the_difference_between_hatha_and_vinyasa_yoga.pdfIn PDF document text
    • http://mnogoturov.com/ejercicios_ley_combinada_de_los_gases12kjq.pdfIn PDF document text
    • http://good-production9.site/pakistan_tourist_guide_neelum_valley5iz8h.pdfIn PDF document text
    • http://womenita.fun/how_to_open_a_pressure_cooker_lid_stuck1dsfi.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/futevuraki.pdfIn PDF document text
    • http://pedron.fun/bteup_revaluation_form_last_date_2019beuuc.pdfIn PDF document text
    • https://rimapanexap.weebly.com/uploads/1/3/4/1/134108998/6249916.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/ragejufa/10943625236.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/orange_crush_bike_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/act_practice_tests_with_answer_explanations.pdfIn PDF document text
    • http://luwulifinuneti.epizy.com/encyclopedia_of_science_and_technology.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/google_chrome_adblock_extension_free.pdfIn PDF document text
    • http://jefebewo.epizy.com/sony_4k_tv_49_inch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/chirunavvutho_movie_dialogues_free.pdfIn PDF document text
    • http://zinolaj.rf.gd/radan.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_off0000c23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23E 5368 bytes
SHA-256: d3ddcd5accbab42cff5e496bd0e0170142fbb4933e99be8138c8ee930f107eb0
font_01_sfnt_off0000d4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A0 9452 bytes
SHA-256: e867df3ddf5409ba69aa835f7fa6dd8ab53e5b11fe1b41365c9fea82fe7f2461