Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d62a1a60241306…

MALICIOUS

PDF

70.9 KB Created: 2021-02-15 00:15:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1eac45d68d714b01d1868fa22005e0ff SHA-1: 50da9feccceac0740d428f46ed36f372cdc56007 SHA-256: 15d62a1a60241306f0eadb81c33dc0980b2ef53864369efd772749f61cf28078
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://maypoin.ru/123?utm_term=janome+derby+portable+sewing+machine+purple+thunder PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4487918/normal_5fe4e47dbbcc3.pdfIn PDF document text
    • https://ludolukek.weebly.com/uploads/1/3/4/6/134699908/d657cdc47818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413361/normal_600bd32255169.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_600deff86b140.pdfIn PDF document text
    • https://serirufudo.weebly.com/uploads/1/3/4/7/134712976/gavefisepuwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393900/normal_60299fc5c0c3b.pdfIn PDF document text
    • https://vewejefimubi.weebly.com/uploads/1/3/4/1/134108794/gunugexorim_vijuwumeta.pdfIn PDF document text
    • http://nigasheff.xyz/towedazuruz23hv.pdfIn PDF document text
    • http://service-hire.com/gelagaxugitususagejap5mhv7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luzawuwu.epizy.com/android_emulator_mac_bluetooth.pdfIn PDF document text
    • http://pesixogid.rf.gd/8707193161.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/ati_infection_control_post_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/anchoring_script_for_duet_dance_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/apgenco_ae_syllabus_for_eee.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/fekibav.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_off0000d6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D0 5808 bytes
SHA-256: 078bd219022ef1c3b2435ef42182635d2739915d82be9619546f965e43e00796
font_01_sfnt_off0000ea7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7B 10600 bytes
SHA-256: d553965569e9f25b75bcbd47d5acfa2ab6c964fde4707555af4064410999513b