Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee3069c355987f8…

MALICIOUS

PDF

78.7 KB Created: 2021-04-25 06:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8b0b50759fb26a579589feff1c4b0f28 SHA-1: 2848104b1770da16f1d2835ed953352b0c828a3b SHA-256: eee3069c355987f8750c5fb1a8a707391e2b407a35a261c0c5774541aaaaeca1
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are used in a link farm pattern, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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://xezojetit.ru/strik?utm_term=hp+laserjet+p4015dn+cartridge PDF link annotation
    • http://help-service-support.com/154962978971yn08.pdfIn PDF document text
    • http://kostlike.site/zanokarikeragurz2dnw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460255/normal_5fd252ed26d7c.pdfIn PDF document text
    • http://dusanaputojinon.mygamesonline.org/95397447146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374699/normal_602c1f625cf95.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/wobosi.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/75883914258p7863.pdfIn PDF document text
    • http://tiktokfrance.fun/229497909744o42v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409797/normal_5fc829c90ced6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5fdc2dcea9c34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413462/normal_5fe6b47fed60c.pdfIn PDF document text
    • http://xaredazisom.mywebcommunity.org/85165418014.pdfIn PDF document text
    • http://winoorama.space/roland_camm-_1_gs-_24_manual0arup.pdfIn PDF document text
    • http://getepitisux.mywebcommunity.org/3573670761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503617/normal_5fdc6e24733fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_600da480b604d.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/kekumazen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_6060f9453dbd6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f7a2e12-17a7-4bed-a53b-cb58fa39a72e/how_to_start_new_game_plus_persona_4_golden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/938b491b-4353-4a1d-9f14-619b20123775/what_does_the_color_black_mean_in_the_uae_flag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbd491f5-eda0-40ad-b095-a3e6fb8de210/thinkorswim_paper_money_options_trading.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45a36f8c-534c-4aea-a1b1-4fa094afc941/meaning_of_a_hard_days_night.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f57e75aa-0009-42d1-b577-2ae11e54729d/ms_sql_ebook_free_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF510 5684 bytes
SHA-256: 78de4e3f398a63c93fc48158720cb008cffa03f3b894f9dac87516467aaa003b
font_01_sfnt_off00010881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10881 10912 bytes
SHA-256: edd6435e27561bcaeeeee60a6571637c16a17556f2fcb5f35825bc36d67e3e5e

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