Malicious PDF — malware analysis report

Static analysis result for SHA-256 34348cfd180e503f…

MALICIOUS

PDF

135.4 KB Created: 2021-05-09 22:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 767c87a2aba81fcf0441b4b6173b1909 SHA-1: 53ea46829029760b3c650cbc196d462df7b0fcfe SHA-256: 34348cfd180e503f6a76aefe027ce3106df0a06010592bcf6bbb4d4cd98246d3
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://botokaw.ru/strik?utm_term=can+you+buy+chick+fil+a+honey+roasted+bbq+sauce PDF link annotation
    • http://gukabibus.mygamesonline.org/6922006732.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/aIhPmaw/ballet_folklorico_classes_for_adults_near_me.pdfIn PDF document text
    • http://navewezaninub.iblogger.org/88710075165.pdfIn PDF document text
    • http://pazefezos.mywebcommunity.org/sajelobivobozaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403429/normal_5fec66f6dd713.pdfIn PDF document text
    • http://xasedogamif.mypressonline.com/comment_fusionner_deux_ensemble.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/wuvemejubabuzevar.pdfIn PDF document text
    • http://trikotoria.ru/run_on_sentence_quiz_4th_grademfery.pdfIn PDF document text
    • https://cdn.sqhk.co/merojuniv/bihhhVO/tumuxifizasujiju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401697/normal_5ff52d855c604.pdfIn PDF document text
    • http://ueuniti.website/vipuwefqslx.pdfIn PDF document text
    • http://in-step.shop/tumenarekefjnwfo.pdfIn PDF document text
    • http://xofelivigavas.mywebcommunity.org/skin_cancer_information.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/hUn9ig8/megan_is_missing_full_movie_online_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nalakakowim.epizy.com/mutirimakitezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b2def26-2fef-451c-8103-e639bb47869b/49540956578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83baba90-3300-48f5-91da-4c5884707ce9/how_do_i_hook_up_wireless_headphones_to_my_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/434ed66e-29f5-4c21-80d4-73bdf9128787/fender_passport_250_plus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/678b0221-02e0-4f15-9aa9-2cbcd500dd03/juwimemipez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/904b83e8-4f46-41ae-9c44-cd9e543a5502/nespresso_en750mb_lattissima_pro_coffee_machine_reviews.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_off0001d22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D22D 5444 bytes
SHA-256: 3f7b78c9f036677d659051d401c1fcac9c556f4b64d3ab94e2b0be97286c4f3b
font_01_sfnt_off0001e4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E4AD 12724 bytes
SHA-256: 30e55f76792a9f39d8f4bf9c6d8632a9165bb5cc23995fac2a88b3ad8b899166

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