Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf985c99f1fe13f4…

MALICIOUS

PDF

78.6 KB Created: 2021-03-07 17:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3fc50ffe7354b2c718731f488db010fc SHA-1: 558f759df056e185d854352b8e157d2c509462ab SHA-256: cf985c99f1fe13f4ca2cc189a1e3051ff039b957e7937b0eaae7b5e8efd54f5b
194 Risk Score

Malware Insights

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

This PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic. The presence of a URL related to 'moviestarplanet hack accounts download' indicates a lure to potentially malicious content. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://mezovuduw.ru/wix?keyword=moviestarplanet+hack+accounts+download PDF link annotation
    • https://cdn.sqhk.co/zisazege/eUjgo7v/adults_coloring_books.pdfIn PDF document text
    • https://cdn.sqhk.co/puroneruk/aN4Wfia/64166733033.pdfIn PDF document text
    • https://cdn.sqhk.co/pusobatosip/njngiEX/lagubusigokulidaximo.pdfIn PDF document text
    • https://cdn.sqhk.co/mubogasaven/jjiX2Z6/viridian_city_gym_leader_let_s_go_pokemon.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/what_does_the_word_punctuated_equilibrium_mean.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/how_do_i_reset_my_taylor_digital_thermometer.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/ibwQghb/virus_protection_for_mac_air.pdfIn PDF document text
    • https://cdn.sqhk.co/xalibolopov/vjeygrm/iphone_notes_icon_png.pdfIn PDF document text
    • http://labiluwewinedu.22web.org/adulthood_stage.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/bKP9hic/16039083121.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/sojenititava.pdfIn PDF document text
    • http://tarosuzaloku.22web.org/foxconn_g41mxe_motherboard_drivers_for_windows_7_32_bit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://878ee1be-828d-48b9-a24a-84283cf66a1c.filesusr.com/ugd/86936c_af916c9173b241a79f4fd51347e35f2c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fb70c38-35d0-4941-8b04-72b2412a6a16/fawatazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08648550-6ffc-43f7-a96d-d0f83b7edda5/zetetoxotudifarutotev.pdfIn PDF document text
    • https://599b09cd-7b6a-4758-94a3-08a08d316165.filesusr.com/ugd/628a76_9dc00765991d47bfac283b28ddf353d7.pdf?index=trueIn 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_off0000f51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51A 5380 bytes
SHA-256: d5a2e2f3571987fb8353cfa2850863262c1eee9e301896a8a3c2110062307d55
font_01_sfnt_off0001077a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077A 11200 bytes
SHA-256: 04d5cb091ba3bfcbb204f713954f930b242700661d85017296234258860bd140

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