Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af7810644622564…

MALICIOUS

PDF

73.6 KB Created: 2021-03-08 08:09:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 992a2a2688d7ce43e0c5c9250ffa7f52 SHA-1: 953a3188008802227d59673dcf4d6b0da563434b SHA-256: 3af78106446225642b974cb887c9e7adff5f443808c8123db53eca416c3e2538
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by an ML classifier and contains numerous embedded URLs. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host many links on disposable domains, likely for SEO manipulation or to distribute malware. The presence of a URL with 'utm_term=robert+kiyosaki+books+in+spanish' suggests a lure to attract users interested in financial books.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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/123?utm_term=robert+kiyosaki+books+in+spanish PDF link annotation
    • http://pugalibapuf.iblogger.org/gigiriga.pdfIn PDF document text
    • http://jigatinapa.22web.org/africa_house_plans.pdfIn PDF document text
    • http://zajowidased.iblogger.org/calendrio_2018_portugues.pdfIn PDF document text
    • http://movopifotet.22web.org/pajorososipuximeva.pdfIn PDF document text
    • http://xidasetetobuge.scienceontheweb.net/wavuwejane.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://retelowanudugut.epizy.com/applied_statistics_and_probability_for_engineers_6th_edition_solutions_manual_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f26a6955-66a6-4d24-8f44-1066748cc99b/how_to_calculate_weight_using_length_width_and_height.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08007184-92c6-4595-9c20-7588938386ba/xosugosutagetekatew.pdfIn PDF document text
    • http://zekubegem.epizy.com/wuwisesisedewubabasawobu.pdfIn PDF document text
    • http://famuxixisuxu.rf.gd/how_to_become_a_school_social_worker_in_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/objective_list_theory_examples.pdfIn PDF document text
    • http://podisiwabexuran.rf.gd/arduino_board_uno.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/wonubixafizivi.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/cricket_australia_app_android.pdfIn PDF document text
    • http://jurukukixinom.rf.gd/44873191536.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/aula_internacional_1_audio_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4822cb-08a7-48a2-86f7-5167a9048c2f/32917155422.pdfIn PDF document text
    • http://duvodix.myartsonline.com/divuwanobak.pdfIn PDF document text
    • http://popaxaxi.epizy.com/bootstrap_form-_control_input-_number.pdfIn PDF document text
    • http://kenomubuwisi.epizy.com/proform_hybrid_trainer_elliptical_pfel03815.pdfIn PDF document text
    • http://pemebisifikase.rf.gd/98666443190.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2635016-ac5e-4ca4-971b-92e780eee394/jesus_calling_sarah_young_enjoying_peace_in_his_presence.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_off0000e3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BD 5188 bytes
SHA-256: 629a44312992ade3b8c5c9857b23489187e865d213e111f5c631f757e000995a
font_01_sfnt_off0000f565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF565 10588 bytes
SHA-256: 0ef19322fe2c2bb47bd6d19716e876476295affc49f1678a1514028f09848725

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