Malicious PDF — malware analysis report

Static analysis result for SHA-256 9836db7e3975212b…

MALICIOUS

PDF

78.8 KB Created: 2021-03-27 23:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b1801b072b5d64a33d58c0362e7a7f27 SHA-1: c10a1de2125c71614a2ea0fe6d16d1be008f7d82 SHA-256: 9836db7e3975212b15d29304b0050c31fb9c20561fa746eaf63313f2e382c423
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://jumiwimov.ru/aws?utm_term=best+living+cost+country PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4530712/normal_5ff6208291af2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417807/normal_602285dc80a51.pdfIn PDF document text
    • http://guwaxata.iblogger.org/calvary_s_love_sheet_music.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388614/normal_6052a1e62bf85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500678/normal_600d52e55ccc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485162/normal_5fe343fd39870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_60297fd9c2bf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490369/normal_603801a2bc364.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408997/normal_5fca75b53732e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_2a81d47f20db44d985411c9f9ddf14a0.pdf?index=trueIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_13afb880e6ee4078982296f665dc768c.pdf?index=trueIn PDF document text
    • http://nuxiluruzijova.epizy.com/remumodubezopebobilos.pdfIn PDF document text
    • http://jalovunenenema.epizy.com/ffiv_after_years_guide.pdfIn PDF document text
    • http://fakipewoze.rf.gd/explorations_in_core_math_8th_grade_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed3852b7-e677-44ee-9b61-fc36f98bdc0f/pibumemidijow.pdfIn PDF document text
    • https://e60c805d-b9e1-47fc-b045-983511e9ac1f.filesusr.com/ugd/116bb2_1fa3b319be454d6b805c3626bc7fb7ed.pdf?index=trueIn PDF document text
    • http://bikogegumibekur.epizy.com/wodexedegitafuwedu.pdfIn PDF document text
    • http://dikawuferiwa.rf.gd/add_appendix_latex.pdfIn PDF document text
    • https://f33eab34-52c4-4f1b-91c9-7c5ec1255b8f.filesusr.com/ugd/9d0374_20107ea69efe4b10a2f3726ac93e4ffc.pdf?index=trueIn PDF document text
    • https://78e27e65-9996-4239-a63d-7a21722db537.filesusr.com/ugd/03f576_f4c8f1bfab884fedbcc22c74dcd9c652.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f88536-3949-4f1e-9dfc-675e23601bc4/the_lion_king_full_movie_2020.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_off0000f8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A8 4968 bytes
SHA-256: 64f26b1b6f8438c28be50669066ea6b85829f22b3c5c340ed81aa600a5d945fd
font_01_sfnt_off000109b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B9 10560 bytes
SHA-256: 6ea8fcedf2b8e456aae0809e1dfb831d7a2a588232b3818751ad2617fc78fe86

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