Malicious PDF — malware analysis report

Static analysis result for SHA-256 d114a45018ba6f72…

MALICIOUS

PDF

73.3 KB Created: 2021-03-22 11:00:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ed693ed11927f9e58297ae6a97aa3301 SHA-1: b8c243018bac6a4ac1b686be2eebe7eb00d2838a SHA-256: d114a45018ba6f728ae87c46f67629f17f1fb6c7696d49ba39581b1f024da0c9
186 Risk Score
Tags
free-cdn-ebook-manual-lure

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. 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 0.9998

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://maypoin.ru/strik?utm_term=define+theatrical+conventions PDF link annotation
    • https://xidatebomi.weebly.com/uploads/1/3/5/3/135326438/kejeresasowo.pdfIn PDF document text
    • http://firstsecu-paypal.com/the_republic_grille_college_station7kezt.pdfIn PDF document text
    • http://gufutaca6.xyz/129682787975m2wm.pdfIn PDF document text
    • http://dipurenirexo.22web.org/divorigegajubafoxojakiva.pdfIn PDF document text
    • https://cdn.sqhk.co/fitodofafe/jji9Uje/tiktok_songs_2020_mashup.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/jb7JvsF/48232228137.pdfIn PDF document text
    • http://jokojevuwurepip.22web.org/kunofovejazuboko.pdfIn PDF document text
    • https://pebawatiwokup.weebly.com/uploads/1/3/4/5/134576243/3686144.pdfIn PDF document text
    • https://bejidadona.weebly.com/uploads/1/3/0/9/130969139/6330119.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/VjcYS2A/12824713188.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/c69116c0-aa8a-4f9f-a797-5c14647f0f41/how_to_do_nothing_with_nobody_all_alone_by_yourself_free_download.pdfIn PDF document text
    • http://xazomagojuwa.epizy.com/amino_acid_types_and_properties.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/visopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/828e7103-5c28-4d75-ba12-7ca968b25c0a/chords_for_have_yourself_a_merry_little_christmas_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f45a8675-b2f6-4725-93cc-edd5d43a1a44/el_manifiesto_comunista_1848_resumen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50e62665-58d8-4a96-8704-58a3ed968e2f/ejemplo_de_memorandum_en_ingles_y_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c62dfc0-4eec-46c2-9a2f-a6649e4d345a/lupevufifilunaku.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/wumenitipuzevaxuvijumolen.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A4 5028 bytes
SHA-256: bfbfcef51ae16f3d6a948391cd407a05fe154cef2b56f7553eab566599f4e896
font_01_sfnt_off0000f3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CA 10748 bytes
SHA-256: 60adbdd39106f7c16be07d92e291015380e28847a40cfcbdf206723e6834c852

Open this report in the interactive analyzer, or submit your own file for analysis.