Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad6d01c03148f2e…

MALICIOUS

PDF

83.2 KB Created: 2021-03-06 14:16:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 497f3bfcd800f68e49e691640fdce1b8 SHA-1: 2c166a1392f8888363012619c95469a91ab8ae4b SHA-256: 7ad6d01c03148f2e8b81bb314ccafdeddc1076ba009561a18c44dae90778e931
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are associated with link farms, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to external malicious content.

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://midufefew.ru/wix?keyword=prentice+hall+geometry+cumulative+review+chapters+1-8+answers PDF link annotation
    • https://terunutu.weebly.com/uploads/1/3/5/3/135319236/8ea28a3ca01db5d.pdfIn PDF document text
    • https://xowunaxevome.weebly.com/uploads/1/3/4/6/134679103/larevosed.pdfIn PDF document text
    • http://2020coupons.info/dubetedufumutexufosaxavupu8491.pdfIn PDF document text
    • http://pubggaming.online/detective_conan_movie_21_sub_indo2hscl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409627/normal_603d23d0a84d3.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/lord_of_the_flies_piggy_name_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458615/normal_60414b08ccae8.pdfIn PDF document text
    • http://instas.site/dragalia_lost_wiki_akashadztan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_6027597a7d687.pdfIn PDF document text
    • http://uggi-ugg.com/mere_bhole_bhandari_song_mr_jattd8xzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450039/normal_5fda787394336.pdfIn PDF document text
    • https://zipesonavizi.weebly.com/uploads/1/3/6/0/136052153/4167636.pdfIn PDF document text
    • https://rowisinudusa.weebly.com/uploads/1/3/5/3/135310113/4cbc7551950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_602d971888f36.pdfIn PDF document text
    • https://zovakilezogavi.weebly.com/uploads/1/3/1/1/131163957/4654156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476122/normal_601607b4ee7e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/84212892143.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/best_android_phones_2018_usa.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/audio_technica_lp120_usb_turntable_lowest_price.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/bloodborne_chalice_dungeon_glyphs_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/bablu_dablu_video_pagalworld.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/what_are_some_similarities_between_comic_books_and_graphic_novels.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_off000105b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B8 5880 bytes
SHA-256: 1cde4706835a5b2b6092168453acf2ca2c5d58ae4dd4998e2d7a0eebff285f35
font_01_sfnt_off000119bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119BB 10724 bytes
SHA-256: 3e2cda578f9bc44c291fd5b21ff785b6057e016244404e0f23d1aa94abd1fe96

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