Malicious PDF — malware analysis report

Static analysis result for SHA-256 07453391b0c730b5…

MALICIOUS

PDF

68.7 KB Created: 2021-02-07 16:00:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4066fe2830dffce2756c41041cc2d66c SHA-1: 230ef8561482bbc1a1fbfaa8c5cc813867692043 SHA-256: 07453391b0c730b559390f3bf43a407ff89819d76758acac50be291aa3cea172
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wb?keyword=formaciones%20de%20boca%20vs%20real%20madrid%202000 In PDF document text
    • https://vexokefiveve.weebly.com/uploads/1/3/4/4/134494279/juvaxusun.pdfIn PDF document text
    • https://cdn.sqhk.co/netimawifes/bjchiFL/can_you_become_president_bitlife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497095/normal_6017253dd71c6.pdfIn PDF document text
    • http://mangalvpodarok.ru/lozezoxegolimebilojexuvugvgpq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404528/normal_60002212ed141.pdfIn PDF document text
    • http://bottlechainworld.com/ddpai_m6_plus_reseto7sf6.pdfIn PDF document text
    • http://eeuuurrrrr.space/jikidulinusumma08.pdfIn PDF document text
    • http://segwaywheelchair.ru/bawabt2cye.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/AgiRiab/sevekirawotupazoboligo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421940/normal_5fdb732c99782.pdfIn PDF document text
    • https://daliroxemonove.weebly.com/uploads/1/3/0/7/130775241/fagitovinoxobo.pdfIn PDF document text
    • https://moforikegumiret.weebly.com/uploads/1/3/2/6/132680993/9653287.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/Uxgeiea/how_to_raise_a_child_in_bilingual_family.pdfIn PDF document text
    • http://soldonlittleton.com/32582529574azmj5.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/ifjfBhj/imagine_dragons_demons.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8E 5512 bytes
SHA-256: 57f5ea519df52994619a59ee0918f8a22afd011e41c6d10dd321767b069fe6f8
font_01_sfnt_off0000e034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE034 12024 bytes
SHA-256: ed2a116cc1805a005a9d8e8279baac864f149c42cdc113f0096828fc3c757a54

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