Malicious PDF — malware analysis report

Static analysis result for SHA-256 90551e70e01330c7…

MALICIOUS

PDF

119.6 KB Created: 2021-03-28 00:31:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cc8fb92dbbe35f6011e3130f11e5f9ea SHA-1: c7eb290b2626f35d430faf0fd0ff5d13a7b06616 SHA-256: 90551e70e01330c77ec41d1e5234222b3c34598310892ad08830508c4a31182f
146 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. 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 0.9997

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=dish+tv+vip722k+manual PDF link annotation
    • http://pr-bux.online/virtual_mixer_dj_apkcfjcy.pdfIn PDF document text
    • http://vashobereg.com/asco_cap_her2_neu_guidelines557vb.pdfIn PDF document text
    • http://ifeelgood.club/91359204075htotl.pdfIn PDF document text
    • http://fitit.space/kannada_badri_video_songso007n.pdfIn PDF document text
    • http://watercart.ru/bible_commentary_online_macarthurk6mbx.pdfIn PDF document text
    • http://5gusevshop.space/paderasos6p0in.pdfIn PDF document text
    • https://jonolepazom.weebly.com/uploads/1/3/4/5/134520471/0cf4d.pdfIn PDF document text
    • http://papogemedafudak.22web.org/18093722378.pdfIn PDF document text
    • http://agentsecure.space/chokher_bali_book_in_bengalitashj.pdfIn PDF document text
    • https://selikiwomutarew.weebly.com/uploads/1/3/5/3/135329437/edb5fee1.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/example_of_broad_statementntqam.pdfIn PDF document text
    • https://guxitubekin.weebly.com/uploads/1/3/4/2/134267073/4128908.pdfIn PDF document text
    • http://bomepufibawil.scienceontheweb.net/chuyn_sang_nh_bng_foxit_reader.pdfIn PDF document text
    • http://manovina.mypressonline.com/xokikuranomareziron.pdfIn PDF document text
    • https://wazexexa.weebly.com/uploads/1/3/5/3/135305699/ziren-wugivejexedeg-raguxagoje.pdfIn PDF document text
    • https://zumugewij.weebly.com/uploads/1/3/1/4/131483128/3179027.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/central_machinery_scroll_saw_blade_holderviqwn.pdfIn PDF document text
    • https://kekoluborefox.weebly.com/uploads/1/3/5/3/135327445/6193560.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://valikidaku.epizy.com/zalasusikowoxet.pdfIn PDF document text
    • http://wiloradakuno.onlinewebshop.net/jam_clip_it_bluetooth_speaker.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18861 4952 bytes
SHA-256: 59c1369758d3045aec9109f6eaf0f2547b00dffe1405f6393c7ac8d16b49247d
font_01_sfnt_off00019919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19919 12484 bytes
SHA-256: c476d229afd89e745deeea631c8267e7d0edd5ffbfe28e508dc5355483424291
font_02_sfnt_off0001c23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C23B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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