Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e455e00aa9e24e7…

MALICIOUS

PDF

77.0 KB Created: 2021-02-28 02:57:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e53f752d82e360fe0aea1f4d29f54536 SHA-1: ab9191221d40f4770b3dc1c79fe8eb55c3df3a22 SHA-256: 7e455e00aa9e24e70e385d8142bee8066dd7f060f6109daf3f0f59c8a3db62b5
186 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
  • 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.
  • 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://druttle.ru/award?keyword=dsc+pc1616+user+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/zegareguw/aij9jiN/lakuzimujarujajodojaleve.pdfIn PDF document text
    • http://bigswinner.space/54478975141if3r3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427077/normal_6026243a8640d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489255/normal_6016e112c8e2b.pdfIn PDF document text
    • https://cdn.sqhk.co/jimavidozeze/hghfIjg/lords_hooray_legends_of_legends_code.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_601525e468dd6.pdfIn PDF document text
    • https://fizegebukuri.weebly.com/uploads/1/3/1/4/131453213/5827357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428078/normal_60307a2eac8ac.pdfIn PDF document text
    • http://13millions.store/confidence_ultra_pro_treadmill_reviewssv6op.pdfIn PDF document text
    • http://legalvictory.group/satisfying_slime_videos_before_bedx6sje.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/Egcigjj/jump_over_the_broom_cast.pdfIn PDF document text
    • http://bio-ita.fun/marathi_calendar_sep_2019f0fpn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fetijuvutod.epizy.com/login_form_template_html_css_free.pdfIn PDF document text
    • http://kasaxamaburabuz.epizy.com/cyberghost_vpn_free_full_version.pdfIn PDF document text
    • http://ruzojonawa.epizy.com/imperial_march_bass_clarinet_sheet_music.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_off0000f044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF044 5504 bytes
SHA-256: 0fe51d83141176b4a40c44d2e1ffd58c7b4701be7c4620e0bcc53b80de6b7f22
font_01_sfnt_off000102ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EF 10660 bytes
SHA-256: 2fb231187817eb8f95f178d0807b8146a4f0cb959b95ac29f59cb0043205a5dc