Malicious PDF — malware analysis report

Static analysis result for SHA-256 657ade7cbb533914…

MALICIOUS

PDF

71.5 KB Created: 2021-02-24 17:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b896f3421cb7e0ccf7bf078f85b0c113 SHA-1: e0a0aeee9c8faf1b5250ddbe9c39122af5c4eb6d SHA-256: 657ade7cbb533914ff3de5cc3ac4a3b0b648a76d438028354d15701d3f7ba56d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=basics+of+electricity+webquest+answers PDF link annotation
    • http://monstergym.ru/history_of_education_questions_and_answerst7u5j.pdfIn PDF document text
    • https://nogekapufininut.weebly.com/uploads/1/3/3/9/133997605/wekodalitovaz-resomoronot-pedesaralov-virepubox.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/24937622983.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/what_is_the_latest_version_of_wii.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/5oCiaSg/past_present_or_future_tense_quiz.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/hiLHBkx/98182702799.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417643/normal_60048d53d015f.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/hiiejhd/3629274448.pdfIn PDF document text
    • https://gekimirit.weebly.com/uploads/1/3/4/7/134700474/tofutotevesume-vipejolutobuke.pdfIn PDF document text
    • https://bexalasavego.weebly.com/uploads/1/3/4/6/134650617/wareruropozupuzunuge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417312/normal_5fc802cbc5090.pdfIn PDF document text
    • http://gratoramaa.space/hunger_games_book_vs_movie_compare_and_contrastqwvxu.pdfIn PDF document text
    • https://vitekasawo.weebly.com/uploads/1/3/4/4/134456264/pixubosepipil_lonijofejalem_binuxagoro_loluvese.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/new_york_philharmonic_principal_horn_audition.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/gisegifivol.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_off0000da68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA68 5384 bytes
SHA-256: c1df6a368ca8e5b470e7f5069cee2c9292e7e2db62b2f8b8715f7d13335c5f80
font_01_sfnt_off0000ece7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE7 10596 bytes
SHA-256: a6521ae99914fbd34824023d77d80be7e15dc37355a0eff2bffdb50be3ffa888