Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63f400f050e3ad4…

MALICIOUS

PDF

73.4 KB Created: 2021-05-17 08:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a4c57faa8837c6084a96a07eaf6929c9 SHA-1: 5419acb3b36cea6f5e46812a998b0e18be0a214a SHA-256: d63f400f050e3ad4ea73970810588a5ac1f2f210b02c330038138fd8cdc4096a
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://crophysi.ru/strik?utm_term=jvc+kw-r910bt+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/dukizukijire/jcSicm2/whatsapp_messenger_download_latest_version.pdfIn PDF document text
    • http://ladyso.ru/how_to_use_contour_next_lancing_devicewkezx.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/1OYgjjf/bee_packages_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/lamifiriluz/hc2Idja/candy_crush_soda_apk_ios.pdfIn PDF document text
    • https://kiligazifozu.weebly.com/uploads/1/3/4/5/134506598/fapafevujopup.pdfIn PDF document text
    • http://delayikapy.xyz/addition_to_20_worksheets_year_15cvpi.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/1264748.pdfIn PDF document text
    • https://kusipujetaz.weebly.com/uploads/1/3/4/4/134462876/fajotuvigejorotavumu.pdfIn PDF document text
    • https://fidumozif.weebly.com/uploads/1/3/4/7/134715024/500bab.pdfIn PDF document text
    • https://vekefusuxi.weebly.com/uploads/1/3/4/7/134714580/labod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4162b5e2-925e-46c5-a41c-756cd17c5809/62901889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dcfa1d0-1601-4b82-933c-1064d37bd86d/15977163766.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/verbal_vs_non_verbal_communication.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78d4d5ab-7ff0-41f4-89f7-7daf9afce80a/telugu_short_stories_with_moral_and_author_name.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/hamilton_beach_flexbrew_2-way_coffee_maker_model_49954.pdfIn PDF document text
    • http://vasiruduwoju.epizy.com/checklist_method_of_performance_appraisal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf77f6a1-6019-4ccb-881f-2228fb09eaf1/5186081941.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/businessman_2_movie_480p.pdfIn PDF document text
    • http://nunoxemimo.rf.gd/allan_gray_balanced_fund_fact_sheet_2019.pdfIn PDF document text
    • http://lokemupuwife.rf.gd/37567757048.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/baby_size_guide_aus.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_off0000dc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC94 6020 bytes
SHA-256: aec4c6741dbaeebf04b6eb789c76a288274dee3cc3ace0564aaec562f42e60a3
font_01_sfnt_off0000f0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D6 10984 bytes
SHA-256: aa5ea4ebe6fe20e7bc37fbf36e80c4abb61dd186fa848e78ce29392522b0311e

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