Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea6e6b1947be53b…

MALICIOUS

PDF

85.5 KB Created: 2021-03-22 17:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7281c792667356eca3f5654affbf34ef SHA-1: 561ec8e832759b7109ed4e366728758f380dc3a0 SHA-256: 8ea6e6b1947be53b9baa994f0c93431d8c2e61238af323d019d23aa943412232
126 Risk Score

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 0.9994

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://nipisod.ru/wix?keyword=panasonic+br+2020+lithium+battery PDF link annotation
    • http://wacc-cat.org/android_10_easter_egg_not_workings9ogr.pdfIn PDF document text
    • http://frukt.space/22_jump_street_full_movie_putlockerhgfnz.pdfIn PDF document text
    • http://demask.fun/tugafojilizuzoluk0wjz.pdfIn PDF document text
    • http://powerhdniy.space/bosowesetug93j.pdfIn PDF document text
    • http://acupofjacob.com/gejala_klinis_pneumonia_pada_anakb095f.pdfIn PDF document text
    • http://yellownatural.space/what_is_in_fire_and_ice_condomsg44r8.pdfIn PDF document text
    • http://haifaiv.ru/jj_smith_30_day_keto_challengefot0o.pdfIn PDF document text
    • http://all-gopro.com/citizenship_in_the_community_powerpoint_presentationa88x5.pdfIn PDF document text
    • http://hh666o.site/indivisible_guide_2._0ap6sd.pdfIn PDF document text
    • http://my-favshop.online/622099221036eu4g.pdfIn PDF document text
    • http://kompledom.com/samsung_air_conditioner_error_code_e472lmo7k.pdfIn PDF document text
    • http://profaudit32.ru/coffee_and_alcohol_quotesy269q.pdfIn PDF document text
    • https://cdn.sqhk.co/fosasukenum/4jyjjfm/babies_their_wonderful_world.pdfIn PDF document text
    • http://vugijow.iblogger.org/appreciation_certificate_template.pdfIn PDF document text
    • https://cdn.sqhk.co/kiraxozi/g58Lqif/nimig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_cf0eee2355fc4531b5c1289933762d27.pdf?index=trueIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_33a0fe0f5a5945fe89335dabf8d5fbd9.pdf?index=trueIn PDF document text
    • https://acd80754-3b70-42c6-a60f-3489f6261da4.filesusr.com/ugd/f1780b_f01677927c0b4a4dbf58975b7c354f92.pdf?index=trueIn PDF document text
    • https://76bf09fe-c378-4d6f-baa9-beaf48595a8b.filesusr.com/ugd/61567a_b10235d970974fe29d4caadf35e9be24.pdf?index=trueIn PDF document text
    • http://dinajamabas.epizy.com/mulesezoj.pdfIn PDF document text
    • https://e4da1597-3bb3-488b-9226-7c2c9e06e9ce.filesusr.com/ugd/db5d73_cc1418f2dd6848c0ada33f4f755205b3.pdf?index=trueIn PDF document text
    • http://tozuduno.epizy.com/android_studio_logcat_filter_not_showing.pdfIn PDF document text
    • http://rawozenagi.epizy.com/zebafitijegonibinupuwam.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF8 5556 bytes
SHA-256: 808220cdd5d0acbd0400e5c8d3b416e5c8b1404fb1b66ac0743389ef79efe42d
font_01_sfnt_off000121ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121AE 11104 bytes
SHA-256: df7eef5e4d6c303e061f9840eb37be0b0ff988be049ae2d05803365ddcb3eab3

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