Malicious PDF — malware analysis report

Static analysis result for SHA-256 47307c3e27f6a0b3…

MALICIOUS

PDF

84.1 KB Created: 2021-04-05 11:34:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ced03ad3e1dc84cd5362af0cf0082901 SHA-1: 27c5e1a343e06984d2b8ebfd3860e2996b7948cc SHA-256: 47307c3e27f6a0b36ec318688d8707501b42d98e8c6bac1075941ae517ce3fd4
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 0.9994

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://jottigo.ru/123?utm_term=bluetooth+wireless+earbuds+for+android PDF link annotation
    • https://cdn.sqhk.co/vafebutiman/BricBgc/dividing_whole_numbers_with_decimals_worksheets.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473049/normal_5fff105204983.pdfIn PDF document text
    • https://cdn.sqhk.co/lowanivari/hbgjgiL/borurabuvapopowojimelexim.pdfIn PDF document text
    • https://basalolevezuw.weebly.com/uploads/1/3/1/6/131606508/sajobelobosafuj_vixodiwilus_turawo.pdfIn PDF document text
    • http://didazema.mypressonline.com/vuxawanafupusi.pdfIn PDF document text
    • http://tikopariwoxa.mygamesonline.org/65360846759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401723/normal_606069d8c0bb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416939/normal_6023ea640ee04.pdfIn PDF document text
    • http://tugrull.com/mifob44c64.pdfIn PDF document text
    • http://gudelew.mywebcommunity.org/58514683639.pdfIn PDF document text
    • http://keksik24.ru/63738906740arn5l.pdfIn PDF document text
    • https://najuxobetejip.weebly.com/uploads/1/3/4/2/134265875/ae6360.pdfIn PDF document text
    • https://fapadeli.weebly.com/uploads/1/3/4/4/134445247/5386174.pdfIn PDF document text
    • http://zomaragexavope.sportsontheweb.net/yasser_seirawan_winning_chess_strategies_download.pdfIn PDF document text
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/b19e465b084.pdfIn PDF document text
    • http://pifowovumuwe.medianewsonline.com/harry_potter_and_the_goblet_of_fire_chapter_32_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/baxoladipezu/hfdghin/41034957587.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/heZgdhi/savulodob.pdfIn PDF document text
    • https://muvekova.weebly.com/uploads/1/3/5/3/135394778/6495910.pdfIn PDF document text
    • http://puvepum.getenjoyment.net/figorotefexa.pdfIn PDF document text
    • http://vawadofofasip.getenjoyment.net/peter_drucker_biography.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/11940247780.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://visugog.myartsonline.com/75348107385.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_off00010adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADB 5276 bytes
SHA-256: aa2160d109b340871de0a16e5e4901ed3096cdd32a7a71ee8278f48b047f110f
font_01_sfnt_off00011cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD4 11092 bytes
SHA-256: 503ddf08f4d907c5559ccd8c4a366db6fe7ef656fbefd37c1b9aaeb27e6be88a

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