Malicious PDF — malware analysis report

Static analysis result for SHA-256 0845d11e63b0a242…

MALICIOUS

PDF

76.3 KB Created: 2021-04-06 07:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e1ce563644e668bd8f5b9930098b0893 SHA-1: 7341b2648becd4fe76c08d8cd14cf6383b821669 SHA-256: 0845d11e63b0a242ffa51246c9856c66f59ced5e6db8fe525ac1eb541c9c61a0
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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/strik?utm_term=how+to+romance+cora+mass+effect PDF link annotation
    • http://prazdnikprosto.ru/nevebavedodipuexfcr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457296/normal_605de37283af3.pdfIn PDF document text
    • http://evilcheats.fun/what_are_the_types_of_predictive_modelsczc0m.pdfIn PDF document text
    • http://stepka2016.xyz/present_simple_present_continuous_exercises_multiple_choiceqifio.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/hhhszhf/my_verizon_fios_payment_arrangement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_5fe6d0c75a490.pdfIn PDF document text
    • http://raisinsapp.club/is_water_ox_lucky_in_2021imqaq.pdfIn PDF document text
    • http://mybiol.site/gexusakipepilczmg.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/5hgiesl/bare_bright_copper_prices_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/zajujinul/djhezii/barcode_scanner_android_camera.pdfIn PDF document text
    • http://freefire-gifts.com/wemo_maker_replacementdt8g9.pdfIn PDF document text
    • http://yogait.space/basic_statistical_analysis_sprinthall1221k.pdfIn PDF document text
    • http://rozel.ru/what_is_a_different_word_for_lethargicvr8ui.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380882/normal_60382f59dbff3.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://cleaner360.shop/android_studio_admob_banner_not_showingp9h8y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485568/normal_5fdc6bc9904fb.pdfIn PDF document text
    • http://help-lnstagramcopyrights-verify.com/komekozozuwidazovj5xos.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/99db81eb-7747-4512-808e-37cb4f365207/how_long_will_jodi_arias_be_in_prison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d717c969-d592-420b-bad0-13cf6d46feb3/tintin_2_film_release_date.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_off0000ecea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEA 5048 bytes
SHA-256: 09eb909c29dc0a794a884954b5725dbfb88f165f93d9e3a4f49899e89a9a11a3
font_01_sfnt_off0000fe07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE07 11132 bytes
SHA-256: 81a49c6cf9f4994de7a03035ffdaeae3130f1220b55423919485516a9dbdba7b

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