Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba3b1fc8ee82806…

MALICIOUS

PDF

72.7 KB Created: 2021-03-05 17:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c0229bc0f6c692e297b7e040d6913997 SHA-1: 2e7d35bc9179d487d4966556e6904d1bcc90ec86 SHA-256: 9ba3b1fc8ee8280630dfcdafe0df92a0128e088a909f2e2f581abe1f84b379f8
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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://yafferge.ru/wix?keyword=lemonade+recipe+pdf In PDF document text
    • https://puwoposujol.weebly.com/uploads/1/3/0/9/130969317/budijuju_xalimalawe.pdfIn PDF document text
    • https://nobakavukip.weebly.com/uploads/1/3/4/3/134373074/puxuf.pdfIn PDF document text
    • http://baffer-shop.space/adb_stop_android_applicationzdrq3.pdfIn PDF document text
    • https://xurebutira.weebly.com/uploads/1/3/2/6/132681359/xaderurefebozon_mekegidokulur_gojewoved.pdfIn PDF document text
    • http://varietystore.website/archer_season_4_episode_12_castv7t28.pdfIn PDF document text
    • http://moscowflowers.online/puwusadobimalapibugikifajasn4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417656/normal_601ddb6cddde1.pdfIn PDF document text
    • https://nugenezeni.weebly.com/uploads/1/3/4/6/134632238/8486003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_6041a4d225df9.pdfIn PDF document text
    • https://vofaxarexokuj.weebly.com/uploads/1/3/4/7/134762848/1664807.pdfIn PDF document text
    • http://lyudi23.ru/bbc_reporting_scotland_weather_videog7otj.pdfIn PDF document text
    • https://mepotogi.weebly.com/uploads/1/3/4/7/134737672/nijebugete.pdfIn PDF document text
    • https://wivopugigevu.weebly.com/uploads/1/3/4/5/134514529/390cabc5a2c.pdfIn PDF document text
    • https://natuxebifenukud.weebly.com/uploads/1/3/1/3/131378868/6105557.pdfIn PDF document text
    • https://komimuvupelogi.weebly.com/uploads/1/3/4/3/134312664/fajimejurur.pdfIn PDF document text
    • http://bizbize-yeteriz.org/boromezakidukadumz04n.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/penale/jsa_template_worksafe_victoria.pdfIn PDF document text
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_a4bd30e073b2493e9a99496bac8707b9.pdf?index=trueIn PDF document text
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_e9f80881a70041ba9c41d8b267d5dd6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/35294630657.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/gusisiruxawululaza.pdfIn PDF document text
    • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_877eb762caa948e29ad684900aea8cf3.pdf?index=trueIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_cd99029533224aadb144b4316c7f5173.pdf?index=trueIn PDF document text
    • https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_53937e01bcda4020b759d92c8573c5b2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/dokebisu.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_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 5032 bytes
SHA-256: 801142115bb9fba6294a4fd1b691550dddea45d9a64dea83b67e92a2d7830e71
font_01_sfnt_off0000f1d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D3 10864 bytes
SHA-256: ac3607736c06ac61a4b39f54cb67176a7237609a9a1073d0edb421cf9e4af43a