Malicious PDF — malware analysis report

Static analysis result for SHA-256 49fe350eaafff0e4…

MALICIOUS

PDF

87.7 KB Created: 2021-04-03 22:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0761dcc8544444ab7cf3efedf4672ab0 SHA-1: 152e43fcea79e32f426c7e3d68c6a7e6a395361c SHA-256: 49fe350eaafff0e472472a17fdec5fbb7362bf4088b7cda54054225a878263de
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 0.9993

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://leonvi.ru/strik?utm_term=how+do+i+calibrate+my+vizio+4k+tv PDF link annotation
    • http://pufivuziviv.mypressonline.com/anthony_giddens_sociology_8th_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413231/normal_60216d6530ef3.pdfIn PDF document text
    • http://vitalia-transports.com/dynamatic_technologies_ltd_annual_report_2018gg45w.pdfIn PDF document text
    • http://kiluniv.22web.org/above_ground_storage_tanks_myers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500453/normal_5fef13e7c2564.pdfIn PDF document text
    • http://abwaab.su/rejirevoxiligik450s.pdfIn PDF document text
    • http://indir-kazan.com/minecraft_2._0_download_20206ioq5.pdfIn PDF document text
    • http://finofubamu.mygamesonline.org/9717780621.pdfIn PDF document text
    • http://raisinshub.pro/4664087151jzu0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383582/normal_6001b11b3a429.pdfIn PDF document text
    • http://stepka2016.xyz/how_many_castes_and_languages_are_there_in_nepal8ppm1.pdfIn PDF document text
    • http://zoosalon.org/95462793312s45nj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_601f42f2b8a2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497368/normal_604d0e3c49d17.pdfIn PDF document text
    • http://helplnstagram-confirm.com/canon_imageclass_d320_service_manual816y0.pdfIn PDF document text
    • http://usacreditmonitoring.info/tuesdays_with_morrie_chapter_1_summarygmhno.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_adb5ada435644eedad18bcf4224c07ba.pdf?index=trueIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_865408d7f3234f13aa3243fb4e8d5c5e.pdf?index=trueIn PDF document text
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_40b830166180494d9cf232ffc73f8b68.pdf?index=trueIn PDF document text
    • https://9d50af6f-dbf7-41ba-b854-83985329a12b.filesusr.com/ugd/33c377_b7c8f731722a4fceb2e78654d2841b03.pdf?index=trueIn PDF document text
    • https://d0bf7e8b-5449-41c0-93e9-161603c0719f.filesusr.com/ugd/197ed4_670f560b95ad436198ca0b78de74fd17.pdf?index=trueIn PDF document text
    • http://fakomufe.epizy.com/xebulogugefutelew.pdfIn PDF document text
    • http://vawirir.atwebpages.com/bivudodajavukuzodokaxukis.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11722 5464 bytes
SHA-256: 2de4b36d32de696c45c96bdf87d162624d67ecf447e63987eef90791e255aa48
font_01_sfnt_off000129cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129CC 11108 bytes
SHA-256: 9fc6012558fdd323bf3f6b294acfa4d9cf231ae9ee893567af481fddcfb8b907

Open this report in the interactive analyzer, or submit your own file for analysis.