Malicious PDF — malware analysis report

Static analysis result for SHA-256 46dff190efe07258…

MALICIOUS

PDF

114.2 KB Created: 2021-04-03 10:01:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6e2b767ae537cbac6c9b3f75220c0993 SHA-1: 5b4f72df56644df4aabd3c23b6da3f6c0be9a1e6 SHA-256: 46dff190efe0725845d0fc458c66b434d3ae81b15eaad2e6e2a62c89e8e14cd0
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 0.9984

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=herring-hall-marvin+safe+co PDF link annotation
    • https://magifoxokepo.weebly.com/uploads/1/3/6/0/136053300/tagagukafiga.pdfIn PDF document text
    • https://sudarotabodubig.weebly.com/uploads/1/3/1/4/131407445/f1e292749.pdfIn PDF document text
    • https://muxetomanudone.weebly.com/uploads/1/3/1/4/131406273/6945279.pdfIn PDF document text
    • http://segaruzobuguses.scienceontheweb.net/wibefulewusejulo.pdfIn PDF document text
    • http://golixudib.mypressonline.com/formulas_and_functions_in_excel_2020.pdfIn PDF document text
    • https://selemuja.weebly.com/uploads/1/3/4/8/134893326/suludiwijisebevaduwa.pdfIn PDF document text
    • https://ramakizuwag.weebly.com/uploads/1/3/4/3/134321509/91beb0081f5.pdfIn PDF document text
    • https://wiwovadale.weebly.com/uploads/1/3/5/3/135322143/7430894.pdfIn PDF document text
    • https://muzuxagofonokow.weebly.com/uploads/1/3/1/4/131406885/nirokufigitiwaleb.pdfIn PDF document text
    • https://mewupevubuk.weebly.com/uploads/1/3/5/3/135387541/6e1d8eded3.pdfIn PDF document text
    • https://juwufugoxeza.weebly.com/uploads/1/3/4/5/134528381/wosimobekiji_winepagusexin.pdfIn PDF document text
    • http://posebakuxosafod.getenjoyment.net/ghazwa_e_khandaq_in_urdu_free_download.pdfIn PDF document text
    • https://zovotinaselon.weebly.com/uploads/1/3/4/5/134589175/moxejufuxiwokajore.pdfIn PDF document text
    • https://ribupawotomimam.weebly.com/uploads/1/3/4/6/134694318/04c19452637a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fufudaloxola.onlinewebshop.net/cantate_domino_satb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/199e9762-82bb-4c6d-a445-48409b6528d2/68628524731.pdfIn PDF document text
    • http://kezasifofajimo.rf.gd/45139238699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/591aeefc-7763-4994-a3b4-0f68d6f099ba/24655183692.pdfIn PDF document text
    • http://xovijoj.epizy.com/74809086575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e13ae55-0104-40f8-8891-8c5e8d0b3393/tamane.pdfIn PDF document text
    • http://simanij.rf.gd/lepusenanifebaw.pdfIn PDF document text
    • http://lurivukilurufex.epizy.com/affordance_theory.pdfIn PDF document text
    • http://momogopi.rf.gd/tisabisotesekovidageposo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e826641f-0167-48dc-9143-2dc48eb41409/65804905454.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001759b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1759B 5056 bytes
SHA-256: 860d22e752a6a00a478ffde623f9877c13d78a028185cfe7fb00ac0ea180f79a
font_01_sfnt_off00018698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18698 11028 bytes
SHA-256: 11f8ae1c5f1cea5928ebbb9467e43febecbff900be4a16722b3e707f452b6025
font_02_sfnt_off0001ac61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC61 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176