Malicious PDF — malware analysis report

Static analysis result for SHA-256 770ddfc05c18a81f…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 00:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 68eafd579f3284b130a7b2ad4ae22985 SHA-1: e73b5210358f999579affdc261849b0b4486c0e9 SHA-256: 770ddfc05c18a81f4bbf69152bec26bbaee0e058b217df9e64fbed86329d5205
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://leonvi.ru/award?keyword=fundamental+chess+openings PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465147/normal_5fd888232fc62.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/jChipxV/xofalofesukewopinep.pdfIn PDF document text
    • https://vosojexurixug.weebly.com/uploads/1/3/1/0/131070535/penepofowom-losagedetar-fenolasajekegik-venokupirokevu.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/1627687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_60270d39dc307.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/when_did_bc_and_ad_become_bce_and_ce.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/bezab.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/kawobotarolejof.pdfIn PDF document text
    • https://nimekeboxiz.weebly.com/uploads/1/3/0/8/130873861/devemunitovasi.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/9fsoibQ/hd_screen_recorder_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451555/normal_5fc8b36733a39.pdfIn PDF document text
    • https://kipunelikerave.weebly.com/uploads/1/3/0/9/130969086/gumikixadem.pdfIn PDF document text
    • https://zemizipip.weebly.com/uploads/1/3/4/0/134098502/newirikixodubo-zazenive-juvisen.pdfIn PDF document text
    • https://cdn.sqhk.co/gajeneset/he6Egge/52355479342.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473638/normal_5ffe4690a9ed8.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/ralph_waldo_emerson_self_reliance_annotations.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/gotenukevepunin/anti_discrimination_policy_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/crock-pot_csc052_digital_slow_cooker_instruction_booklet.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_off0000e0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E4 5344 bytes
SHA-256: b6f56bc139bf1135b7fd09feb778b5a59c59a2bf7a0b4bfda2d194920646a767
font_01_sfnt_off0000f2f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F4 10280 bytes
SHA-256: 4eaca06b5be1e85b115ae046b324fd3a929c405082aa2d5575c6dbf6d51e903d