Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3c565516aab036…

MALICIOUS

PDF

74.2 KB Created: 2021-04-06 03:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 99745c02c49055bce5dadbcbcc615993 SHA-1: 368186318e01b56109025fb5ff044189e7e682e4 SHA-256: 7b3c565516aab036962033cdbd2ee97a645fce9016f504cbb5d4636a9b22d917
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

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 0.8041

Heuristics 4

  • 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
  • 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=is+a+lateral+move+worth+it PDF link annotation
    • https://cdn.sqhk.co/puwukuwos/cjPo3gi/zombie_crowd_game.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/hdPgchg/30827308948.pdfIn PDF document text
    • http://xodaxedepapopox.mygamesonline.org/year_6_math_test.pdfIn PDF document text
    • http://stroymarketmetal.ru/bahubali_2_tamil_movie_ringtonecr205.pdfIn PDF document text
    • https://gaditefu.weebly.com/uploads/1/3/2/7/132712385/kovimojikojo_koworajinopaj.pdfIn PDF document text
    • http://rekijiwowak.scienceontheweb.net/read_fantastic_beasts_and_where_to_find_them_screenplay_online_free.pdfIn PDF document text
    • http://meetcabinets.xyz/psychsim_5_descriptive_statistics_worksheetn31m3.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/cdegf2G/ordinary_skincare_routine_for_combination_skin.pdfIn PDF document text
    • http://tamawasobo.sportsontheweb.net/bromazepam_6mg_bula.pdfIn PDF document text
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/9075867.pdfIn PDF document text
    • http://nuveclovet.xyz/votazesebezivemekiw6clp3.pdfIn PDF document text
    • http://mikrotikwizard.com/gender_trouble_google_bookso82a6.pdfIn PDF document text
    • https://mimuromujalu.weebly.com/uploads/1/3/0/7/130739347/1cac98d.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/6ac14079-1a9b-4111-b579-87e68967be7c/apc_back-ups_xs_1300va.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ff24fc-c2bd-4606-8974-2c79bb32217c/how_to_choose_a_wetsuit_for_diving.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/zevapirezidenin.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/icloud_for_windows_32_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaf0d831-6f17-440f-bc82-11011082ad82/blessed_be_your_name_lyrics_and_piano_chords.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/how_to_build_muscle_while_burning_fat.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/16839112637.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/vw_polo_6r_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/mccartneys_ludlow_market_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/32355917745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bbdb74b-6c93-4559-aae1-35b7952329bc/tulosajevinidevibojipala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cc36489-74b3-4d24-ae2d-a53783e50700/english_idioms_list_with_meanings_and_examples.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E9 5016 bytes
SHA-256: c0e692c1077797edf30083ede5779dc892ee191067e349038d530078eee68800

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