Malicious PDF — malware analysis report

Static analysis result for SHA-256 208fb626654f933e…

MALICIOUS

PDF

71.5 KB Created: 2021-04-06 19:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1defc7a8526a388da00be8fdd69d2c58 SHA-1: 1169c97315f3bde89384ddcad7ffc95c538d5fac SHA-256: 208fb626654f933eb916f4adbd31b7a220817ed32b00f99892fb48e315e1f75a
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-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://dafemum.ru/award?keyword=cost+accounting+course+outline+pdf PDF link annotation
    • https://wojaginobaxap.weebly.com/uploads/1/3/1/8/131857211/vitepewabopanev-juzuzoded-fumewefu.pdfIn PDF document text
    • https://rilubaka.weebly.com/uploads/1/3/5/3/135303332/padorub_dokulirobilif_titeketeg.pdfIn PDF document text
    • http://moxegelubopidi.sportsontheweb.net/96341713167.pdfIn PDF document text
    • http://gixapedotamerow.mywebcommunity.org/english_learning_books_for_beginners_free_download.pdfIn PDF document text
    • http://ritefajitexu.scienceontheweb.net/vugosufiwumazifurirufu.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/gdVChfl/63755082432.pdfIn PDF document text
    • http://bapitafi.22web.org/discoveries_in_science.pdfIn PDF document text
    • http://shtancircul.site/tascam_dp_006_power_supply3rpra.pdfIn PDF document text
    • https://tifimiwarefimi.weebly.com/uploads/1/3/4/8/134895051/6006687.pdfIn PDF document text
    • https://kuwupixunipava.weebly.com/uploads/1/3/3/9/133986845/ad739071198.pdfIn PDF document text
    • http://all-host.site/jozimoxefawasefevanupelxye2.pdfIn PDF document text
    • http://salukapebuke.iblogger.org/48028701053.pdfIn PDF document text
    • https://cdn.sqhk.co/fematixub/hicdgfs/perfect_kick_2.pdfIn PDF document text
    • http://dreabling.online/hx_stomp_firmware_3.0_release_date4k140.pdfIn PDF document text
    • http://moxilekulina.getenjoyment.net/alsace_map.pdfIn PDF document text
    • http://sijuvibitita.iblogger.org/39584107534.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505363/normal_5fc967730b5d5.pdfIn PDF document text
    • https://cdn.sqhk.co/tavanaru/gjigio8/donegarunogerixuvofedin.pdfIn PDF document text
    • https://cdn.sqhk.co/lidumezuvir/gfgfje8/good_vanilla_cupcake_recipes_from_scratch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dorowoz.rf.gd/buku_praktikum_akuntansi_perusahaan_jasa_dagang_dan_manufaktur.pdfIn PDF document text
    • http://nalirabagetovop.epizy.com/how_to_pair_polk_soundbar_with_iphone.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_off0000dbf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF2 5228 bytes
SHA-256: 65f6e6250830a18a90981bc7479651ca080ea735d785a7a5abc5268816af76bc
font_01_sfnt_off0000edc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC7 10252 bytes
SHA-256: 3a0aaf1588454ef56e7c60e72380d217277f8e6d78761364cf1294d53beb777c

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