Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6c42ead078d259…

MALICIOUS

PDF

101.7 KB Created: 2021-05-26 01:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4e17a3583d792ef9bc4823f4ebd630ea SHA-1: d925b9fa4d6bb85cd032888cb9e26d1c67a5e784 SHA-256: 5d6c42ead078d25917b4cddca19bc4067464f426e193485d48c9c6297408c813
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/strik?utm_term=guns+servers+for+minecraft+pe+apk+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421630/normal_5fc7bad1a3fd5.pdfIn PDF document text
    • https://ruzudagozigiwis.weebly.com/uploads/1/3/5/3/135394236/7104613.pdfIn PDF document text
    • https://zuwizogagotajal.weebly.com/uploads/1/3/4/0/134012426/860debd06b0ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490266/normal_60659578db9fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425492/normal_604f66d8e1466.pdfIn PDF document text
    • https://menafemudiwifog.weebly.com/uploads/1/3/0/8/130813668/poxemaxuwesupig-xewegajise-rofafefodoniju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409409/normal_5ff1839fb1bd8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366020/normal_5fc85398e7a93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478670/normal_6038420f5acdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370294/normal_605e1735c557a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449603/normal_6068e2da4ff0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_603050b92a6dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491436/normal_600e079259efc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488135/normal_603b777c5aa1f.pdfIn PDF document text
    • https://jujuguzifise.weebly.com/uploads/1/3/5/2/135299578/goduxedixabamewufun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd376211-9746-41bd-9514-4faea3f7bd94/6716449412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4f889fa-1bbe-4126-872e-1535a3c01fd8/13820852712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7506575e-6245-4c07-a579-e0829b8a9610/jibefaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e90830c-d01a-42e4-8e4f-b2c452dc5f89/pogev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18e6d3bb-08e4-4be5-8bbb-b2076a4f1c63/can_you_take_the_written_driving_test_online_in_florida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c9af49a-ee03-4c3d-bd80-394c7ea4eb50/dostoevsky_notes_from_underground_summary.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001131e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131E 5548 bytes
SHA-256: b4e03f163c818b6aa34328ac405cd45ae931490f31c6d6c37407677d8bb26015
font_01_sfnt_off00012600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12600 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off00013163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13163 12236 bytes
SHA-256: c5f936d3645d6598e9d0ae7236529207cf263a695005ea3e84b64b7853be3630
font_03_sfnt_off00015b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B04 16700 bytes
SHA-256: e6283296c812f6947ab9ed5b637b77be525426f8fadc109566549cfb6cc7cc82
font_04_sfnt_off000172a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x172A7 5980 bytes
SHA-256: dcf75a9f2b916b231cfbed8427225a12510394ee0cc873b8aaa9aef32bf35447

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