Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48e3346bc018125…

MALICIOUS

PDF

83.4 KB Created: 2021-03-10 15:13:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4f93b9c3b2331f3735b582fc2564fabf SHA-1: 62a647070361f91c1ad473e58bb3f86584a9af7e SHA-256: e48e3346bc018125dfe942fe61aa7fda0dc8c797718cedd4306a09dba3e519d2
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://xezojetit.ru/strik?utm_term=how+to+train+your+dragon+new+movie+2020 PDF link annotation
    • http://hotloveme.online/9698818823535d4w.pdfIn PDF document text
    • http://blablablacar.online/22297607963l26f0.pdfIn PDF document text
    • http://igclienteam.com/narcotics_anonymous_step_working_guide_step_61glfm.pdfIn PDF document text
    • http://legko.travel/dilatumoxilafijogela98znb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473432/normal_6029277c6cc8a.pdfIn PDF document text
    • http://prostochillforum.fun/87307439932wx6k1.pdfIn PDF document text
    • http://xajoraxi.22web.org/xuduzanepaguregisiwux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417321/normal_602d43003d761.pdfIn PDF document text
    • http://bas-vorota.ru/adobe_photoshop_apkui0tb.pdfIn PDF document text
    • http://repair-kompov.ru/reflux_dietj1a3p.pdfIn PDF document text
    • http://iranomics.com/sipukubetofojumigajurch6n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fazafof.rf.gd/gram_sachivalayam_hall_ticket_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/fazuzo.pdfIn PDF document text
    • https://73c25812-7308-4b32-b985-10e2a25710ca.filesusr.com/ugd/5b604d_4ca247fcd7b94460844e336c9863782b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/free_etsy_business_card_template.pdfIn PDF document text
    • http://benifolagalat.epizy.com/39437648830.pdfIn PDF document text
    • http://gumofiwulova.epizy.com/hp_laserjet_p2055dn_toner_change.pdfIn PDF document text
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_b55eb565b4d64448ba08a6130b66aebc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/will_walmart_restock_black_friday_online_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/speaking_of_courage_essay.pdfIn PDF document text
    • https://8a833fea-7c9a-4d2e-a5a7-d3590f42a3e5.filesusr.com/ugd/9aab09_290a9fe86e0847d0a62241c2db34858d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sisaxu/79552930518.pdfIn PDF document text
    • https://1ba6f066-89d4-4445-b8a9-08a6de046ef2.filesusr.com/ugd/d40554_de5aceaa95024a2590f85f81d321dfb6.pdf?index=trueIn PDF document text
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_1b2c92dfbb88482f86d154e80acb2272.pdf?index=trueIn 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_off00010867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10867 5424 bytes
SHA-256: ce032d1f084021b989eb5e44010bec385d43f6719d53c6633d0db85131eb8b9c
font_01_sfnt_off00011adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ADF 10804 bytes
SHA-256: d3a24f783b41a46792a4d51fcf466a4fe74e73d7940b2b08ab5b80ac3b448374

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