Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bedba06d6fb3fdd…

MALICIOUS

PDF

92.2 KB Created: 2021-03-11 02:43:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 41c25172b875f3ed2393bdab201f11ae SHA-1: a1e43637523f89818c086f85cc07f7b5fed5ec57 SHA-256: 4bedba06d6fb3fdd663c9c5e9b43b5501d1427292aa3c0fccb7639e468844958
186 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. One of the primary external URIs is https://soxebez.ru/award?keyword=abramelin+pdf+espa%25C3%25B1ol, which is likely part of the malicious campaign. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 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.
  • 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://soxebez.ru/award?keyword=abramelin+pdf+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/silijebutu/cjbjbjb/jitaxosata.pdfIn PDF document text
    • https://nakebakij.weebly.com/uploads/1/3/5/3/135339599/numigawala.pdfIn PDF document text
    • https://cdn.sqhk.co/sawitofi/cidwVLq/tomizopasirusi.pdfIn PDF document text
    • https://meletiwupidime.weebly.com/uploads/1/3/5/3/135313264/7a385a4c372ea.pdfIn PDF document text
    • https://cdn.sqhk.co/sarowojep/i2Iiehb/76289164479.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/ft7fgdM/national_geographic_magazine_resale_value.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/cTEjgol/lekisumozonidowamup.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/what_are_the_methods_and_techniques_of_teaching.pdfIn PDF document text
    • https://cdn.sqhk.co/mapexuze/cfhdrjd/tobexesaxinuka.pdfIn PDF document text
    • https://lofidebonejiniz.weebly.com/uploads/1/3/5/3/135334880/5db1c1cb.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/0HeW74d/kci_airport_parking_coupon_2020.pdfIn PDF document text
    • https://rebijigubewu.weebly.com/uploads/1/3/4/7/134770847/sowejivewesozazebuxa.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/31657584.pdfIn PDF document text
    • https://cdn.sqhk.co/nufopusifa/GDja2hd/95606106765.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/qL1TCij/16884575465.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/ca4331fb-d9a5-467f-b895-6fc0fb670882/how_to_reset_casio_watch_after_battery_replacement.pdfIn PDF document text
    • http://wutorokanotomav.onlinewebshop.net/pafuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26c91383-fe4f-4736-881c-846c8fb54ca7/what_is_understanding_in_the_bible.pdfIn PDF document text
    • http://jilabof.epizy.com/2018_subaru_forester_2.5_i_premium_all_weather_package.pdfIn PDF document text
    • http://koradanizepagow.myartsonline.com/59541363434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/220cd8e4-8037-44ca-92cc-d487739c0694/60426638894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d726bff1-4552-483b-8c47-e2ac1d812cd4/avalon_vt_737_plugin_mac.pdfIn PDF document text
    • http://zibinafo.rf.gd/zikimoruf.pdfIn PDF document text
    • http://jisizulo.rf.gd/the_twilight_saga_box_set_hardcover_books_1-4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000110fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110FA 5528 bytes
SHA-256: b5147b4107dcd424a946e772d11a7ee4f3b1ee510f3df2d78bc65bf2e5ae4ec7
font_01_sfnt_off00012368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12368 11864 bytes
SHA-256: f59d51472f61c3d5089f2390b8ceacbc929710b62b36ef2bdd7a64b9ab39f48f
font_02_sfnt_off00014c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C57 16088 bytes
SHA-256: ccf42771811f3bfcfc4881e0ea26c61020463520b77f542a172ed5d532e4d210

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