Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ade1a61543747c2…

MALICIOUS

PDF

69.3 KB Created: 2021-03-17 09:30:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: dbc901a941fcf0cd84ab2ea8ee5d7716 SHA-1: 3d07933543f5601ec170774830704962a79ddb48 SHA-256: 3ade1a61543747c2e0d6b884e62637449a2176b7051469bb0d0c80ca1e0e0f7f
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

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 0.6895

Heuristics 4

  • 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
  • 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=acknowledgement+for+thesis+pdf PDF link annotation
    • http://xuvavarapegu.mywebcommunity.org/pimamubilekav.pdfIn PDF document text
    • http://miribut.mywebcommunity.org/amc_8_2019_results.pdfIn PDF document text
    • http://xanejog.medianewsonline.com/87746719256.pdfIn PDF document text
    • https://firupewuvub.weebly.com/uploads/1/3/4/3/134330425/1040495.pdfIn PDF document text
    • http://balonedud.iblogger.org/buvosijupur.pdfIn PDF document text
    • http://teguruta.medianewsonline.com/mafilupisel.pdfIn PDF document text
    • https://lifusapemar.weebly.com/uploads/1/3/4/5/134526201/f6d8627880425f1.pdfIn PDF document text
    • https://wadoruzog.weebly.com/uploads/1/3/1/3/131379034/2944451.pdfIn PDF document text
    • http://jalojewaga.mypressonline.com/upsc_anthropology_optional_question_paper.pdfIn PDF document text
    • http://kuvelopomegemes.iblogger.org/48179641780.pdfIn PDF document text
    • https://nimimetifav.weebly.com/uploads/1/3/2/8/132814674/xatuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b470e396-5fcf-49e3-8887-507031fa4956/vezobixipugum.pdfIn PDF document text
    • http://duziroro.myartsonline.com/70226423123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c395cfb3-9363-460b-9d35-3eefcac8f522/nanostation_m2_access_point_mode.pdfIn PDF document text
    • https://8b2103c5-345b-48fd-98e3-f19c90c4efd0.filesusr.com/ugd/0e2875_ffad50b9a54d42b6a04c28d3dea5dac4.pdf?index=trueIn PDF document text
    • http://wipibefab.onlinewebshop.net/tilivusotukemivive.pdfIn PDF document text
    • http://mokodipixa.epizy.com/gagegabitoguwusozexipa.pdfIn PDF document text
    • http://pupukoxofamisa.rf.gd/samsung_galaxy_a10_battery_charging_time.pdfIn PDF document text
    • https://2178e3ec-2e0a-46e0-af35-d8a6fdfeb21a.filesusr.com/ugd/c411cf_e44d9b4303a9463db1b7881083a8009d.pdf?index=trueIn PDF document text
    • http://kipejefanowisu.atwebpages.com/tekige.pdfIn PDF document text
    • http://xatabaxad.rf.gd/little_red_riding_hood_into_the_woods_character_analysis.pdfIn PDF document text
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_7fffb241b35042bbbc4889bcc26d6107.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1108ada-e8c5-4de8-bc35-ac8d71de3367/how_much_is_samsung_galaxy_s9_in_nigeria.pdfIn PDF document text
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_5a1c49d0604344c1891f597e23dbe745.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/795b5761-31f7-43b0-a3d4-673368d82fcc/68627031467.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F9 5504 bytes
SHA-256: d1e772caaa6d8f767a05b0875978ab47e8575e7c5205f17b16574fc727c5ab9d

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