Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede33303aeacd44e…

MALICIOUS

PDF

78.2 KB Created: 2021-02-02 16:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: aeccaac2e3d2c99f405d5d9d4d01fa82 SHA-1: 9ad949c271ce021c55fb89cb5fd382a75267d320 SHA-256: ede33303aeacd44e22db1c0afd7664a2d85f0585b64e8c48cba8330757a16c97
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. The embedded URLs likely serve to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/123?utm_term=panda+small+compact+portable+washing+machine PDF link annotation
    • https://viduxetejogat.weebly.com/uploads/1/3/4/6/134600114/0f2959df5c68f4.pdfIn PDF document text
    • http://topijakalez.22web.org/barbie_girl_cooking_games_free.pdfIn PDF document text
    • https://tokafiwunan.weebly.com/uploads/1/3/4/3/134372509/moxerinezoni.pdfIn PDF document text
    • http://sethel.xyz/all_the_fun_of_the_fair_sayingaec8i.pdfIn PDF document text
    • https://komutezux.weebly.com/uploads/1/3/1/3/131398036/6be9387.pdfIn PDF document text
    • https://xedowekogo.weebly.com/uploads/1/3/4/6/134609622/luzaletugulapigo.pdfIn PDF document text
    • http://dirtygirl.fun/toyota_corolla_gli_manual_2018_for_sale_in_karachi3w0g6.pdfIn PDF document text
    • http://amaryllis.space/xumuwomunujereljo61d.pdfIn PDF document text
    • http://wowmarket.info/baby_bestiary_caretaker_warlock7nkms.pdfIn PDF document text
    • https://veriketosamu.weebly.com/uploads/1/3/4/6/134675732/wuritatuwewa_xuwubimuku_lepowosomuwoze.pdfIn PDF document text
    • http://tisimewifexumi.iblogger.org/oh_baby_telugu_video_songs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nanaxaj.rf.gd/akulaku_mod_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/responsive_website_templates_for_software_company.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/83357397036.pdfIn PDF document text
    • http://pimibini.epizy.com/update_android_samsung_j5_2016.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_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 5508 bytes
SHA-256: a8b692255183f092d9affe89d33f7596d5022a993901d70037b1448423c551d1
font_01_sfnt_off0000fa1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1F 10512 bytes
SHA-256: 108abe1b00ba0d1ba861efae28e1b498826c4f681eff463b8644d56a7dd5ced4
font_02_sfnt_off00011da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.