Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c2ecf6bd0a96f9…

MALICIOUS

PDF

69.2 KB Created: 2021-03-27 10:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: abc223439e448776918ad445dc6dae03 SHA-1: 97c35be8448016aa29143bb4aa9e73f919655b1f SHA-256: c1c2ecf6bd0a96f984b99403f19adfa51531975c8c8cbeb450708b35ee91bf73
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 0.9992

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://ponafet.ru/award?keyword=america+west+side+story+choir+pdf PDF link annotation
    • http://riwuvodobopexu.mywebcommunity.org/tata_sky_hd_channel_number_list_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_60243a1177e81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476941/normal_5fd0429c50655.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420476/normal_5ffbb85e7e91b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499309/normal_6008fe23370b4.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/yidhagi/red_rose_tea_bags_plastic.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/iR8igjg/dedujunusexarer.pdfIn PDF document text
    • https://cdn.sqhk.co/zokosofu/gcgezw1/52347725460.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372101/normal_5ffc69b2e7624.pdfIn PDF document text
    • https://cdn.sqhk.co/xasujuteguk/haf1id3/9514402871.pdfIn PDF document text
    • http://witaxolexigabi.mywebcommunity.org/50_warm_white_outdoor_led_christmas_tree_lights_mini_5mm.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafajem/E6hhcUF/network_marketing_quotes_in_kannada.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/fGJjbju/sepufaxejomusojimek.pdfIn PDF document text
    • http://zivemigidefis.mypressonline.com/botulinum_toxin_in_facial_rejuvenation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tubafurubeg.epizy.com/wikebirobolofijaw.pdfIn PDF document text
    • http://jojulupijawide.onlinewebshop.net/the_value_added_tax_amendment_act_2020_act_970.pdfIn PDF document text
    • http://retuvolixunes.epizy.com/wetezorijitit.pdfIn PDF document text
    • http://kojokiguxan.epizy.com/basic_linux_commands_tutorial.pdfIn PDF document text
    • http://fukokikedusej.epizy.com/wofutitidafopasej.pdfIn PDF document text
    • http://favirivesez.epizy.com/simewofug.pdfIn PDF document text
    • http://sesunofopum.epizy.com/58255177643.pdfIn PDF document text
    • http://vikoxip.rf.gd/nulusixozonezom.pdfIn PDF document text
    • http://tilukonera.rf.gd/fepitadomavugoxemusosar.pdfIn PDF document text
    • http://fefipunoz.rf.gd/irregular_verbs_crossword_puzzle_worksheet.pdfIn PDF document text
    • http://pewubik.atwebpages.com/32920598151.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_off0000cf6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6E 5544 bytes
SHA-256: 9b184d6c40d06381c682c6ce0178bcdb1f17072069981a4360effd5f0b41f042
font_01_sfnt_off0000e235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE235 10868 bytes
SHA-256: 05fdfbf0eebcd1694415028f56f60c7ed917ccf071aae5f4a1a82106ff6b3fdf

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