Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11fd6b96b4ffaf0…

MALICIOUS

PDF

75.0 KB Created: 2021-04-01 19:12:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7a734c43a3e8b4276ee5c18700ad1810 SHA-1: ee1b07044f09d89c2b6602721ac8f18088333141 SHA-256: e11fd6b96b4ffaf04e74007a1654c3f8a72d31971b9ad77ac52b57446698b82e
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/aws?utm_term=where+is+tail+cave+in+link%2527s+awakening+switch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477167/normal_605f456c6bd5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413578/normal_605e04052055a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402014/normal_5fce7d3135eb1.pdfIn PDF document text
    • http://aicberg.net/billetera_movil_banpro_bloqueadasi5vh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446398/normal_604309f4badb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487618/normal_5fcbd3c451713.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5fd1ab86ad6fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447447/normal_603a9c5ff1ba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_60487539a4fe3.pdfIn PDF document text
    • http://modernstyle.pro/tupazetia5vsa.pdfIn PDF document text
    • http://rilukilezoxe.22web.org/94053859925.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369654/normal_5fc9b903217da.pdfIn PDF document text
    • http://xitnet.fun/kegubolipute2sr9y.pdfIn PDF document text
    • http://jesedisevifero.iblogger.org/bmi_index_table.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://memekafese.rf.gd/sazulewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5a18464-76b1-409a-b545-7f51a1092a0c/oscars_ballot_sheet_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcdec902-e8c7-4ebe-8871-0b2bc81eb247/vejunisowelulaxoxuposag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ba48b5-f583-4faf-88ad-9d7bebd41928/bunuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ce24171-33fd-4d03-9359-4b2a44e56d9b/bose_acoustimass_10_series_iii_input_cable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13960fd6-65af-4a87-8f7b-26f9514d5226/48625136992.pdfIn PDF document text
    • http://jozolefifove.epizy.com/lafosididebimaviw.pdfIn PDF document text
    • http://xilibosukotijob.epizy.com/38607734906.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_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 5324 bytes
SHA-256: 8a2269589e2c35570615b25c4292471971e9ec14dfb6b5df8ec6fefea8c2b98d
font_01_sfnt_off0000fbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF3 10092 bytes
SHA-256: 338656e3ac8a9646f0a46a6ffe9a06f781942e79ba6799d4c3e269bc7636a1e6

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