Malicious PDF — malware analysis report

Static analysis result for SHA-256 edea2851a68d29b8…

MALICIOUS

PDF

77.9 KB Created: 2021-03-30 05:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a6512c8aaf8f9a091c874c61d87946c3 SHA-1: b223443ee369f0104db2383f625837f202044af7 SHA-256: edea2851a68d29b815685a3131cd738ae84f4f0a24feb3e35c49bb8aa0b30004
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 0.9991

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://jottigo.ru/wix?keyword=insanity+meal+plan+calendar PDF link annotation
    • http://businessoutsourcing.org/bazuwuriv47itr.pdfIn PDF document text
    • https://kunoloxudiruk.weebly.com/uploads/1/3/4/7/134767428/busosetilapevutonob.pdfIn PDF document text
    • https://kipamafulu.weebly.com/uploads/1/3/4/5/134588126/sebotok-fovazanixotef.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/cell_organelle_worksheet.pdfIn PDF document text
    • http://ropixasit.22web.org/catalogo_bticino_living_light.pdfIn PDF document text
    • https://tozakewa.weebly.com/uploads/1/3/5/3/135398337/6ecfefb1f8b.pdfIn PDF document text
    • http://kellys.space/lofudedozodegobetonapovadgauhh.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/63284623600.pdfIn PDF document text
    • http://frankiearvelo.com/rufus_wainwright_hallelujah_piano_sheet_music9ih8u.pdfIn PDF document text
    • http://ourfanz.com/46321808575ci2vh.pdfIn PDF document text
    • https://wunebometa.weebly.com/uploads/1/3/5/3/135314425/jaduwapa-zodinexol-rezomusega.pdfIn PDF document text
    • https://lopenedaxi.weebly.com/uploads/1/3/1/6/131606218/poworepe_watisafebifoke_golilunizeleroz.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/calibration_of_pressure_gauge_lab_report.pdfIn PDF document text
    • http://uabiomanix.xyz/14781084132785ct.pdfIn PDF document text
    • http://gesofetol.iblogger.org/holistic_nursing_approach.pdfIn PDF document text
    • http://petrol-v-pol-price.site/history_of_speaking_in_tonguesk0gs0.pdfIn PDF document text
    • http://sellamorem.com/25757156454z7mcm.pdfIn PDF document text
    • http://raifaisentgo.online/ruzibinbuw3i.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/a1edafcd-8661-4d58-b2c7-42646c7f2997/20347194081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ca65a7-5409-41d2-af6f-bb1a374f8806/67813721077.pdfIn PDF document text
    • http://pizibajavodup.epizy.com/how_to_fix_a_dripping_spigot.pdfIn PDF document text
    • http://lotidasifiteg.epizy.com/jumeruk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad59cd2b-924c-4867-ab31-3704e65fbf4e/sundance_optima_850_circulation_pump.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5b9827-b88b-4aa3-859f-8fad17291935/toro_snowblower_parts_primer_bulb.pdfIn PDF document text
    • http://mugoguzof.rf.gd/79547452110.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_off0000f145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF145 5256 bytes
SHA-256: 2bf029d4694c50f61e2f103e9bd04cc6710dea21d580a9b6a313237b4ad4ec59
font_01_sfnt_off00010315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10315 11376 bytes
SHA-256: 1fd5d7dad20e67281febbae2886c2b5b82f59b9cda8a53fb83c2ca2a51a3fc2b

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