Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d8e4c47725049fc…

MALICIOUS

PDF

70.9 KB Created: 2021-02-28 07:31:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d0f5b2cebf0625f36291f6a601395838 SHA-1: 2d1763707439f1fa95d1db06a47c8a12292878c0 SHA-256: 9d8e4c47725049fc2cc16879ce8e1df14088270f311099b1e30942b291602aa9
126 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, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the 'link farm' heuristic strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/aws?utm_term=how+to+program+dtv+remote+rc66rx PDF link annotation
    • http://labifovejes.mypressonline.com/the_easy_5-ingredient_ketogenic_diet_cookbook_download.pdfIn PDF document text
    • http://ihsteam.ru/how_to_connect_fios_box_to_wifi_extenderld1yr.pdfIn PDF document text
    • http://eagleaff.com/petexupinulipufipufokafeqejfb.pdfIn PDF document text
    • http://fegovoze.22web.org/bajrangi_bhaijaan_movie_picture.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388048/normal_601f688010c31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476750/normal_5fce3871e23df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494138/normal_601c7acc910f8.pdfIn PDF document text
    • http://matcobzor.ru/89719556126xaa50.pdfIn PDF document text
    • https://kipigifusulip.weebly.com/uploads/1/3/4/4/134437712/dunanakeruzul-jikexigemower-mujurubuw.pdfIn PDF document text
    • https://cdn.sqhk.co/nobipajami/j1ggxib/40369099018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380405/normal_601a61c34c6ff.pdfIn PDF document text
    • http://imm-shoes2.club/tirimuposyapog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vazorilumi.epizy.com/fractions_worksheets_halves_quarters_and_eighths.pdfIn PDF document text
    • http://xutulatovemi.epizy.com/video_editor_software_free_full_version.pdfIn PDF document text
    • http://jezeladi.rf.gd/fraction_worksheets_for_6th_grade_printable.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_off0000d9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A6 5516 bytes
SHA-256: c7e512c274453653cec366f8fb54ec041f70625e935cd68be2d8328f269b679c
font_01_sfnt_off0000ec6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6A 10088 bytes
SHA-256: 7d81fb2abe0866239d0d3a61492e8c57eb7e6d213a0633c08e6c7df44f2a65e2

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