Malicious PDF — malware analysis report

Static analysis result for SHA-256 bddd510a78cb8982…

MALICIOUS

PDF

73.0 KB Created: 2021-03-27 10:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f342f67194db28fcbb515e7aee69491a SHA-1: 5a85c6b75da0b9253a4f13ba05c2a27131b4c1cf SHA-256: bddd510a78cb8982c5e4f137f315782fb600f821a77a4c38149ab0094682057b
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 0.9996

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://baarspo.ru/123?utm_term=maps+for+minecraft+pe+android+oyun+club PDF link annotation
    • http://kidiwutimako.mygamesonline.org/subadix.pdfIn PDF document text
    • http://reflectionss.space/pejevotitavojewavo5ib65.pdfIn PDF document text
    • http://lawusuzad.iblogger.org/zesoraxatubawujavo.pdfIn PDF document text
    • http://cuzinfo.ru/hal_varian_intermediate_microeconomics_with_calculus_a_modern_approach_9th_ed._nortonkny5h.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/TidxWxs/friday_13th_killer_puzzle_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/iaieibP/inputs_definition_biology.pdfIn PDF document text
    • https://cdn.sqhk.co/wudajelu/ifVjhVz/oceanhorn_2_ps4_controller_ipad.pdfIn PDF document text
    • http://ionatr.fun/vepatagoi76ef.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/iaidN82/facebook_messenger_not_working_on_laptop.pdfIn PDF document text
    • http://luxshop21.site/puxopexew9eh2j.pdfIn PDF document text
    • http://pojapusevipuzu.mypressonline.com/13645325784.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/3d4e03c4-2a19-4fe6-9445-c3f47d77a00c/numark_ttusb_cartridge.pdfIn PDF document text
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_7efc5e4403394da6af7e3bfa964ffe01.pdf?index=trueIn PDF document text
    • http://lugivodunoxasi.atwebpages.com/33694465746.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_f2d1e3cb9b97451fa791ad791b7a7324.pdf?index=trueIn PDF document text
    • http://tumobuwixakeg.atwebpages.com/encyclopedia_of_computer_science_mcqs.pdfIn PDF document text
    • http://wetosunonatag.epizy.com/divina_commedia_con_note.pdfIn PDF document text
    • https://9f2a6cc1-6e15-4467-beaa-57274ca996ed.filesusr.com/ugd/78f4c3_f652d1388c7b4096a7cec1b9ed644870.pdf?index=trueIn PDF document text
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_773615a6713e4c9995685f5fc6e8335e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/afbce821-5666-400b-a86f-83e41d0618d2/womum.pdfIn PDF document text
    • https://1bf92926-22d0-44a1-94fb-b51843c41cd5.filesusr.com/ugd/762c1a_52fbe23d7d964deb8052d4ad19eae698.pdf?index=trueIn 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_off0000db34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB34 5548 bytes
SHA-256: 1b82ef7389dbe66d1458c05ad87be47785a5dd11cf9a75e14cac50abda2197c2
font_01_sfnt_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 12264 bytes
SHA-256: 91fa56d39272b2f5e09257bc2bdc3726df5a568cdd16a189c5b3fbd5abd6fa86

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