Malicious PDF — malware analysis report

Static analysis result for SHA-256 795c24018a90cb33…

MALICIOUS

PDF

80.0 KB Created: 2021-03-16 21:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2956e0127abe3fd8024a2a19428f1fa4 SHA-1: 10fcea1ca0e4d2ee6d2593d977171f35455ea757 SHA-256: 795c24018a90cb33f49739c38f63d3d43b62764099d116f2586261f1f08b0b74
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://zajinet.ru/strik?utm_term=what+is+the+theme+of+a+doll+house PDF link annotation
    • http://winovigamaj.mygamesonline.org/all_souls_day_2020_catholic_date.pdfIn PDF document text
    • http://wilozobugo.iblogger.org/80804265645.pdfIn PDF document text
    • http://navevukosuso.mypressonline.com/xipineworogowiduf.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/51297380903.pdfIn PDF document text
    • http://dizofuses.mypressonline.com/nimeted.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/gumagabu/tasobewixivafoxexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e0bc03a-41ab-4da1-bd78-f5005b876216/for_the_first_time_in_forever_piano_sheet_music.pdfIn PDF document text
    • https://aa5f33e9-793b-4807-a257-9eac84d314d0.filesusr.com/ugd/aa57b2_8b72db3bba364012857fbc01e1724fc9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pipaneku/housefull_4_new_song_pagalworld.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/the_four_book_review.pdfIn PDF document text
    • http://jofaralufax.rf.gd/53942785551.pdfIn PDF document text
    • https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_c5f314a2c70e446b9bee5227326521c0.pdf?index=trueIn PDF document text
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_d1208f1517f44156a41eeb23c9207233.pdf?index=trueIn PDF document text
    • http://xojorefalez.rf.gd/60338809450.pdfIn PDF document text
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_0cc6b746168e45c3bfea95fb745f5e4e.pdf?index=trueIn PDF document text
    • http://lekinip.epizy.com/beginning_and_ending_sounds_worksheets.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/stress_management_tips_for_college_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d609aa4b-75a6-4ea0-b6fe-395dead5c7f0/wahl_clipper_kit_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/lubobinagebejutamepam.pdfIn PDF document text
    • https://9404c449-4eda-4458-b2a1-b16504d8d131.filesusr.com/ugd/23a6c3_63abf7676975444e950c875514ee95bf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/452943fa-89e9-4021-8271-69f703a15b38/92368297433.pdfIn PDF document text
    • http://lavapokapajemob.myartsonline.com/casio_illuminator_telememo_30_manual.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD5 5064 bytes
SHA-256: 4f50e5544c97ae907570e20a1368e1b80cdd45cae037798d38ebb73da9f96d18
font_01_sfnt_off00010df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF3 10736 bytes
SHA-256: e17cf2da1bac6897d81e0371a70a6b4ce48aeba42643d2b9a18651b67a3e65bc

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