Malicious PDF — malware analysis report

Static analysis result for SHA-256 562f64d232b42970…

MALICIOUS

PDF

70.8 KB Created: 2021-02-13 18:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1bbeb9077bd75a94d4605ad4f3c776bf SHA-1: 7412817313c66234e4d6b7da85981b3ac7b91ffb SHA-256: 562f64d232b42970842bdb57050b9e4b7dafcfee2fe5a8f28f558b4dc89e1871
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The document body, though heavily obfuscated, contains text related to a search query, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://seumenha.ru/123?utm_term=hardin+county+jail+iowa+phone+number PDF link annotation
    • https://cdn.sqhk.co/patagarinixa/eghjcA1/house_electrical_wiring_diagram.pdfIn PDF document text
    • http://tasuzafu.22web.org/spotify_passwort_auslesen_android.pdfIn PDF document text
    • http://misstourist.info/acer_aspire_a315-_21_manuallt5xz.pdfIn PDF document text
    • https://cdn.sqhk.co/zativojor/g7Dicgf/binakosapivirum.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/ggiihjU/anime_face_maker_go_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/Sijeii9/darezamadabaposofav.pdfIn PDF document text
    • https://cdn.sqhk.co/gasubapo/hdhhjjD/40196901821.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/2NWggY7/mankind_project_warrior_weekend_review.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/gjbmcgc/legends_of_runeterra_new_cards_august.pdfIn PDF document text
    • http://klossheff.xyz/serenazaxewazapuza93n.pdfIn PDF document text
    • http://wibebilija.22web.org/dragon_s_crown_vita_trophy_guide.pdfIn PDF document text
    • http://itravelimpressions.com/eylf_professional_learning_program9dydd.pdfIn PDF document text
    • https://cdn.sqhk.co/suzeboxiwo/alijngj/80854252460.pdfIn PDF document text
    • http://gratoraama.space/algebra_1_regents_study_guidevw7y9.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/uihhfhc/sort_it_3d_level_200.pdfIn PDF document text
    • http://netewe8.xyz/991908712871twag.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/jbthDne/sopimivamix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vufosal.rf.gd/rijexinidemanamipudadon.pdfIn PDF document text
    • http://bobupugarini.epizy.com/68644873412.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/87719964499.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/gefiwe.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/restaurant_p_l_excel_template.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_off0000d85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85C 5508 bytes
SHA-256: 0d74f33384236be2dda373e1e3a9293bd1995394be6afc5ae803de85888823c6
font_01_sfnt_off0000eafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFE 10028 bytes
SHA-256: 31f92d521f641bd4becb3d30b841d6290050fe2cbe68a6a05a8a74ce8c9e14b1

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