Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a33886142c63f6c…

MALICIOUS

PDF

85.6 KB Created: 2021-04-19 00:03:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 184ff8e2a3f288c88d86625060ed2bc2 SHA-1: 8a41f4a60dae56eed6488e704d1078e4472fc903 SHA-256: 2a33886142c63f6c5ced12a31e64f35c2aa4783bf3cad7188ef1051f2cbd7039
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 0.9990

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://crophysi.ru/strik?utm_term=yaskawa+a1000+22kw+price PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414153/normal_5fcf3c64bc004.pdfIn PDF document text
    • http://romabeveseruzor.22web.org/animal_adoption_form_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446942/normal_5fed6365c6652.pdfIn PDF document text
    • http://zuluguvo.iblogger.org/how_to_install_ice_maker_in_fridge.pdfIn PDF document text
    • http://xamojopilupivo.scienceontheweb.net/54968111254.pdfIn PDF document text
    • http://zewikeb.iblogger.org/24047191090.pdfIn PDF document text
    • https://dejurepezuneron.weebly.com/uploads/1/3/1/4/131452785/9de3047e1.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/dihhfid/24064225347.pdfIn PDF document text
    • http://palifagumelu.22web.org/raja_bhaiya_video_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463279/normal_5fe0e653f3401.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/pVgehf5/83200645340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451047/normal_60474127b4a7c.pdfIn PDF document text
    • https://cdn.sqhk.co/lopijikuvi/bRY57MC/turkey_drumsticks_in_air_fryer.pdfIn PDF document text
    • http://kowojolajamuv.getenjoyment.net/beleduf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_602df7c9ce5c0.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/gz6xR6U/34148529813.pdfIn PDF document text
    • http://pegijegur.mygamesonline.org/pennant_banner_template.pdfIn PDF document text
    • https://wawisutifefot.weebly.com/uploads/1/3/0/7/130739430/gesowo.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/viiiaha/frontline_assassin_commando_call_fps_duty_game_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pizitibasowu.atwebpages.com/66251856472.pdfIn PDF document text
    • http://tadezaxe.rf.gd/53467103963.pdfIn PDF document text
    • http://luvetux.myartsonline.com/90662102247.pdfIn PDF document text
    • http://rovizomaguwex.atwebpages.com/33855747113.pdfIn PDF document text
    • http://telifujovemevo.atwebpages.com/20675065210.pdfIn PDF document text
    • http://pozijawikubinun.myartsonline.com/fonobibejomevuxaxemupume.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A2 3184 bytes
SHA-256: d9ad4f8c56eb98785be22d97d3098dd3fa70fa74988ec6a0c21ffe0ef4e55518
font_01_sfnt_off00010ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED8 5340 bytes
SHA-256: aa08f8105a0cbe97b1b012d5aab6c977ec8ba357877a66bbdf28b35a6e522c19
font_02_sfnt_off00012130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12130 11572 bytes
SHA-256: 913fea520c5c1e4088e3f9238c7533457866b4462a1b340f707f0f26c9587b2d

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