Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b396b9d274423f1…

MALICIOUS

PDF

68.1 KB Created: 2021-03-23 00:00:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 691adf70c212a9c0d70ad2fe58cbd942 SHA-1: 21a37a63c33f57da263df0a3cf800c85cbee280e SHA-256: 9b396b9d274423f1da2382cd49ca3d11918381d71470e8ee011cc0cf4c908334
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The file contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for phishing or malware distribution. The embedded URL `https://midufefew.ru/award?keyword=ate%25C5%259Ften+g%25C3%25B6mlek+roman+tahlili+pdf` is particularly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://midufefew.ru/award?keyword=ate%25C5%259Ften+g%25C3%25B6mlek+roman+tahlili+pdf PDF link annotation
    • https://gefizubumob.weebly.com/uploads/1/3/4/4/134473977/kebebux.pdfIn PDF document text
    • https://jupoxoguji.weebly.com/uploads/1/3/4/0/134097256/gowovogade.pdfIn PDF document text
    • http://guzoseta.getenjoyment.net/rick_and_morty_comic_book_vol_1.pdfIn PDF document text
    • http://gepopusoka.mypressonline.com/kivibebetiwevabas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404490/normal_5fd1336edf965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476758/normal_600c41e2eab85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373779/normal_604e2157555f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428052/normal_5fda5a82943f7.pdfIn PDF document text
    • https://dopijixofovaje.weebly.com/uploads/1/3/4/6/134692352/37ff71353501643.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_ecc804f97539452fa4a463107fecd03c.pdf?index=trueIn PDF document text
    • https://f07eb630-23ff-4298-a1df-d7940f1ba2dc.filesusr.com/ugd/097a5b_11ff733ff75a48f1a56f91fd65dbb3cb.pdf?index=trueIn PDF document text
    • https://5926284e-b61c-4ed0-95e5-27b9feedd2c3.filesusr.com/ugd/50c35f_7b5e71e9c0a24231ba2075da8cbe641a.pdf?index=trueIn PDF document text
    • https://19a39513-20cc-49d1-a75c-e30ce0314142.filesusr.com/ugd/f99735_77eb469636654a62b7b6793f499bbd54.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/011ab15d-eb39-4551-8f3c-a3e860aa3b9e/41279128511.pdfIn PDF document text
    • https://b1b0174c-961c-4936-87f6-765e1132391e.filesusr.com/ugd/6cf804_99db2d5ceb8944b1abcf83516e793a76.pdf?index=trueIn PDF document text
    • https://39c3e2ba-dcb8-4bc0-9ed7-0058f02c59d5.filesusr.com/ugd/fd4c29_97da25e222d940bdb4a0035fe9102b34.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7de8325d-3390-431a-b663-2b282935ab88/mesugurefuj.pdfIn PDF document text
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_30c7d22308c74491ab5700a58284087e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce73972e-2bf4-4f08-bef0-26e510ed11cb/jesuvalebulowodowobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d6b1d25-eedb-4ff4-bc62-41a3e8cb62d4/does_cold_brew_black_coffee_have_carbs.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE735 5716 bytes
SHA-256: ee07ee9ca84b1f2b359589013aeba60e873a73158b199dbbed79680c783f16cf

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