Malicious PDF — malware analysis report

Static analysis result for SHA-256 102642e4dc91c29a…

MALICIOUS

PDF

77.2 KB Created: 2021-01-24 09:54:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: fc3fe2cae0dcf2867d492968df957289 SHA-1: 405d2343a0536c7f5b4769115196b10c5109afd8 SHA-256: 102642e4dc91c29a6d7617ae94c92cda96df9ff25de3ca54ce1e231eb5878ef6
196 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
  • 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://bologen.ru/aws?utm_term=uniform+acceleration+free+fall+lab+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389354/normal_5ff87d16e9c64.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/axwjf3I/plex_server_remote_access_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/wejideduv/gddxmjc/54563079246.pdfIn PDF document text
    • https://cdn.sqhk.co/taxeseta/jcG2vib/nick_cannon_height_ft.pdfIn PDF document text
    • http://futubog.22web.org/havana_nights_party_invitation_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500429/normal_5ff23a1900f38.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/bxKL9jd/63380564382.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/hij5ahh/lanafewot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457868/normal_5fd78ca234208.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/ae4d0.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzededoz/EjjvyDZ/jibakepamej.pdfIn PDF document text
    • http://pimebujeben.66ghz.com/formule_gaz_dioxyde_de_carbone.pdfIn PDF document text
    • https://cdn.sqhk.co/pisapaxosabo/hcuMhjT/my_toy_box_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475204/normal_5fffbe99bd28b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pakafadudu.epizy.com/14523257018.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_off0000f1e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E7 5248 bytes
SHA-256: 99f84631a64323f2e55bdb88bef43978b745a367b8728816d7ae31e9bf36abb1
font_01_sfnt_off000103ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103BA 10444 bytes
SHA-256: 87e3601c48f8c73d830baebaa6a4089d236a9fe169df050ddcfaec907e94cfea