Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba20e247f1214e0…

MALICIOUS

PDF

92.0 KB Created: 2021-03-12 15:27:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5e82c88d00e3ef34c67cedb49a5bd249 SHA-1: 906ea7f6dc0a68f853a00243c737032a8e033afa SHA-256: 3ba20e247f1214e0c3c2dbeb9dae26d77ad5a9c95f4b184b5d2347d5a8e40e2d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document exhibits characteristics of a phishing or malware distribution lure, as indicated by the 'PDF_SEO_LINK_FARM' heuristic and the presence of numerous external URLs. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were extracted, the document's structure suggests it's designed to redirect users to external sites, potentially for downloading further malicious content or phishing for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/123?utm_term=patch+pes+2017+ocean+of+games PDF link annotation
    • http://kanshoper.site/twilight_2009_full_movie_in_hindi_download_480p_filmywapel6h0.pdfIn PDF document text
    • http://tehnomaster.net/48934681134s3901.pdfIn PDF document text
    • https://cdn.sqhk.co/jizesusaxeta/8xjgEgc/land_rover_off_road_rims.pdfIn PDF document text
    • https://cdn.sqhk.co/bojiluxenome/7gePkie/jelemamigirigetokufinu.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/gejhfhd/siren_head_coloring_in.pdfIn PDF document text
    • http://boost-store.net/26899607134nhtaa.pdfIn PDF document text
    • https://cdn.sqhk.co/zumumolebajo/KeXjcid/psx4_droid_pro_apk.pdfIn PDF document text
    • http://chebsvet.ru/genawof45mz.pdfIn PDF document text
    • https://cdn.sqhk.co/vamosopon/avjchek/21907620939.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_3a932e33364d468aa71db0ad8194edde.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wutogugej/how_many_btu_is_a_22kw_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/felavotiwetagojupojusur.pdfIn PDF document text
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_39cc5c495c404ca0a9c04bda5c1c0fb4.pdf?index=trueIn PDF document text
    • https://ede36962-9452-4451-b182-fa4236ba9bc6.filesusr.com/ugd/83b1b3_85f382e1ecbb487d917109d475c89b71.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/96140208195.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/free_printable_blank_birthday_card_template.pdfIn PDF document text
    • https://5de9ed01-d610-4143-94db-6f998645a8ce.filesusr.com/ugd/1d8bf6_d2df316b52c24f4190036a1ad0fc157c.pdf?index=trueIn PDF document text
    • https://4e4301d6-cc9a-4939-960a-6b497c1efea6.filesusr.com/ugd/d78803_53bfd76db06147a99d6320002e20bb53.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sivanira/11839322747.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111E0 5708 bytes
SHA-256: c7a5c679dbf60bd9781a81766b537a6c0dc0afb051e396731ea99bd1e9c9f04a
font_01_sfnt_off00012542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12542 11920 bytes
SHA-256: 20ff1c48288b68d47c84eb731c1903e879bb2bb854382e23d4de96d1873c476c
font_02_sfnt_off00014de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DE0 16076 bytes
SHA-256: e1ecdaf5f931254822c08e14176e742ed940844fb6ecb9fcb1e73603f1784b15

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