Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc67ce8d182b722a…

MALICIOUS

PDF

74.0 KB Created: 2021-03-25 14:06:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ca8683f36fa18e8d6c482ed30521519b SHA-1: dd4f025b0be34fac4093a2951749caff9c2f723a SHA-256: fc67ce8d182b722a07f562afcf3e87e56efb494fc2f81dfbc970a3ab7cc39496
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 0.9996

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://maypoin.ru/wix?keyword=netacad+rse+chapter+1+exam+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493873/normal_5ffa12863c577.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387033/normal_603551db0125e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493221/normal_604061918d9f1.pdfIn PDF document text
    • https://tubanepa.weebly.com/uploads/1/3/2/7/132740320/289716.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454286/normal_6005f9b08eb16.pdfIn PDF document text
    • http://piter.store/zedidoroxelejobifix2r3.pdfIn PDF document text
    • http://blacktea.space/profile._dat_dls_19_hack_coinfq4mj.pdfIn PDF document text
    • https://kofukupapakube.weebly.com/uploads/1/3/4/5/134586312/194164a310232b.pdfIn PDF document text
    • http://wiboratiraveguw.mygamesonline.org/anatomy_and_physiology_of_the_human_eye.pdfIn PDF document text
    • http://bridgecommerce.com/roman_numbers_worksheet_for_class_5_with_answersfh73v.pdfIn PDF document text
    • http://karma-911.com/how_much_do_film_directors_make_a_yearudwrl.pdfIn PDF document text
    • http://gramnews.xyz/kagagilijujitekevima7ezyn.pdfIn PDF document text
    • http://fibaxoxadomi.sportsontheweb.net/google_sketchup_free_version_mac.pdfIn PDF document text
    • http://mojenisijita.mywebcommunity.org/pupapudajikidif.pdfIn PDF document text
    • http://vesajob.getenjoyment.net/93972849128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381302/normal_60485a26b3b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482631/normal_6018e6a9c3588.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447487/normal_5fcc2273185e2.pdfIn PDF document text
    • https://jefamiwufilidiv.weebly.com/uploads/1/3/1/4/131409158/tapagapo.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/cc81ee3c-d1f7-4da0-9ce7-6e1697901798/pidijusodipodikuvejitabux.pdfIn PDF document text
    • http://dopovis.myartsonline.com/71336172988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f6685c1-0fe0-4918-8f0e-baf94eed26a5/71923181631.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_off0000e5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AE 5460 bytes
SHA-256: 2462f2f6c548b089405637904cbc8c426b2253035f5972b3b343773cac88a2b1
font_01_sfnt_off0000f83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83A 10012 bytes
SHA-256: 408205deafb0ea9a6fe8b4821c978e9fa084f31093fa9a206c51b01782b65fe8

Open this report in the interactive analyzer, or submit your own file for analysis.