Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe53780780d6dd2f…

MALICIOUS

PDF

80.6 KB Created: 2021-03-24 04:13:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1ba20336a21c0efdeecd268a7ce8db6d SHA-1: 939f5c3d40ae3f4d30caa75c3fcfa4c6fcd047ea SHA-256: fe53780780d6dd2f83fd91736c59966469cbf79a72774a22f4169b85e2451607
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 0.9994

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://soxebez.ru/strik?utm_term=stlc+life+cycle+in+software+testing+ppt PDF link annotation
    • http://btsworld.org/university_of_toronto_endowment_report5dclp.pdfIn PDF document text
    • http://pigalimiru.medianewsonline.com/xupot.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/80343308543.pdfIn PDF document text
    • https://nivikaxixigimom.weebly.com/uploads/1/3/5/3/135322477/xejegesidafani.pdfIn PDF document text
    • http://pasikufopubiwo.mypressonline.com/el_almohadon_de_plumas_horacio_quiroga.pdfIn PDF document text
    • http://legendbilisim.com/jatubamazurukidetozizelsjcl.pdfIn PDF document text
    • http://yourlivehelp.com/815734941044c6gm.pdfIn PDF document text
    • http://rating-bookmaker.ru/lonodogujexigoginamuxatupb74v.pdfIn PDF document text
    • http://silver35.ru/luxelumepajixetirofoxogi3egc.pdfIn PDF document text
    • http://gooddevice-online.com/how_to_adjust_camera_resolution_on_iphone_xniput.pdfIn PDF document text
    • http://gloslides.com/the_forgotten_ways_alan_hirschnyvhl.pdfIn PDF document text
    • http://insta-sale.site/download_print_driver_for_hp_officejet_250_mobile_all-in-one_printertzywt.pdfIn PDF document text
    • https://bokonipazesokut.weebly.com/uploads/1/3/1/3/131398478/187066.pdfIn PDF document text
    • https://kakifiku.weebly.com/uploads/1/3/5/3/135347754/gexamesedobu_zovibaroxixen.pdfIn PDF document text
    • https://tavutafaj.weebly.com/uploads/1/3/1/4/131482866/f1482de1ce.pdfIn PDF document text
    • http://abanca-electronica.com/12386073610d5tdy.pdfIn PDF document text
    • https://wugumura.weebly.com/uploads/1/3/4/6/134601103/nigano.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/zawizidiso.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/gogeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6530afe-bcfa-419c-b71d-2e03d20dbe88/how_to_play_british_pool.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/2010_bmw_x3_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46e2ae15-f476-42ae-9e24-fd8fd6369787/planet_fitness_workout.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/les_miserables_movie_review.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_off0000fc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC23 5480 bytes
SHA-256: e5a3597c102dccc61db507bf8b1d424a3248ea27f9492ae0ccd8baecc441d270
font_01_sfnt_off00010eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFF 11240 bytes
SHA-256: 0a9c4aa11e79ccbfca2eb5e97b69c909433aa37f444ba8ce53c7d719bd9d54bd

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