Malicious PDF — malware analysis report

Static analysis result for SHA-256 34793403630ed0d3…

MALICIOUS

PDF

71.7 KB Created: 2021-03-29 05:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 62a0d93a46fa0a149d71973d83342f53 SHA-1: 576aab7ee45f876cf1186b5e430fb561204e9a9a SHA-256: 34793403630ed0d39fbf5f53b862fc93f8b611ada2c6574820f93aefbbecce38
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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://fokemale.ru/wix?keyword=classical+electrodynamics+jackson+pdf+free PDF link annotation
    • https://cdn.sqhk.co/sazalevimit/Nw3Zgfo/first_aid_and_emergency_techniques_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471479/normal_605d52f005969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387933/normal_6054f37b29c46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444657/normal_5fe8df19676a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_602ff8d4c6ced.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427514/normal_603b9e9e2443b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485718/normal_60272f4d5cd8e.pdfIn PDF document text
    • http://pililiriniru.mypressonline.com/agammaglobulinemia_primaria.pdfIn PDF document text
    • http://com-copyrighit.com/9912766175xkgb6.pdfIn PDF document text
    • https://cdn.sqhk.co/pajubopolak/gi8fgey/34796559058.pdfIn PDF document text
    • http://indohealth365.online/452413269sa794.pdfIn PDF document text
    • http://fc-aromat.ru/building_planning_and_design_books0pr79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_601e914314b37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464311/normal_600209929e3ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385848/normal_6041d9969b0c7.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/wizards_of_the_coast_store_support.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5ffbdee26b6a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456705/normal_6004dc18b08c5.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/EhiemBh/peludawejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447647/normal_601728f786ffd.pdfIn PDF document text
    • http://firstreadersclub.com/winusinaczjs8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://netomadutimafe.onlinewebshop.net/impact_of_agriculture_on_climate_change.pdfIn PDF document text
    • http://wareguw.atwebpages.com/86385243672.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_off0000d931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD931 5448 bytes
SHA-256: c60d4d55d3ffc3f8afeff8ac32c219fbc833650a0c3791d84e93c1a527f2d95f
font_01_sfnt_off0000ebaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAF 11040 bytes
SHA-256: f298b5da6236c6b78443eeefa9f4ca59d0c4ebdccd0ab69eb38f930d29afbef1

Open this report in the interactive analyzer, or submit your own file for analysis.