Malicious PDF — malware analysis report

Static analysis result for SHA-256 46599fbe669161df…

MALICIOUS

PDF

77.6 KB Created: 2021-05-16 00:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7bab1f77b4f6d80a0d05a7db6e75ed18 SHA-1: 23b951a11b6674c9575b209b0c23d53ef09df9c7 SHA-256: 46599fbe669161df454f4e1db99507be48606b5db0ad18e58d14964f7279e7ee
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 0.9991

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://botokaw.ru/strik?utm_term=how+to+find+the+magnitude+of+gravitational+force PDF link annotation
    • http://joxesozijemago.iblogger.org/63039738378.pdfIn PDF document text
    • https://cdn.sqhk.co/gofejenizew/jaBshaa/50928552021.pdfIn PDF document text
    • http://bukenisefino.mygamesonline.org/92762029731.pdfIn PDF document text
    • https://cdn.sqhk.co/sesekopusoj/hflhjgh/23484797062.pdfIn PDF document text
    • http://mavafesumej.medianewsonline.com/siwekefakupawif.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/ghj6jj8/rupolomon.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/2jbxp2M/list_of_clue_characters_and_weapons.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d0f5cf02-e55f-42e7-ba97-8a4d5a2b8368.filesusr.com/ugd/7f59a0_b0faee6b6a814240a32f95143432c771.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/how_to_install_instant_hot_water.pdfIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_59707917a3b34e7fbe19b90fa7c3ee0c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed29777b-a0dd-454a-bf2d-1dcf87102678/73894039208.pdfIn PDF document text
    • http://bojepudadadax.atwebpages.com/29745608227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93a5d3df-39cb-431f-b166-a65b8e1d8de8/how_do_you_name_a_photo_on_iphone.pdfIn PDF document text
    • https://c5c27394-2042-4749-9b39-d1c24dcbd9f0.filesusr.com/ugd/e9b987_99eb6336275c45a6aeeb8b45c849e704.pdf?index=trueIn PDF document text
    • http://vapovalexuma.epizy.com/zakowifise.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/anghami_apk_ios.pdfIn PDF document text
    • https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_f643d5a1b88c480386e9e564e39c27ce.pdf?index=trueIn PDF document text
    • http://vuxekote.rf.gd/gogixaxiloxurisajejid.pdfIn PDF document text
    • http://nozamoto.epizy.com/leratuligusozunabe.pdfIn PDF document text
    • http://batawovajupofu.rf.gd/head_first_spring_framework_download.pdfIn PDF document text
    • https://196cdf53-7a38-4f80-8f5e-3ad65c24f50e.filesusr.com/ugd/e5a593_ce9763951f7d44f1905af0dac8018768.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/23abad45-f3bc-4b16-989c-90ec9c80321e/guess_the_movie_name_by_picture_with_answers_tamil.pdfIn PDF document text
    • http://zepizevut.atwebpages.com/97867303125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa7a254b-39b4-4294-93ab-4e33da501827/bezodamatijipupepub.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_off0000efc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC8 5368 bytes
SHA-256: df7a2dcbafd7a35f07732f37ade6a8c4eb612c3e8680aee3ae3aeb34833df72c
font_01_sfnt_off000101f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F6 10652 bytes
SHA-256: 3ddcfc79145a30f73c042eba7ee7f4be163664ce7f974c364acc9c2e46f61b62

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