Malicious PDF — malware analysis report

Static analysis result for SHA-256 7564ad8c4df212ae…

MALICIOUS

PDF

76.8 KB Created: 2021-05-10 23:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8e2e3a2a56337371b839b039500b1b51 SHA-1: 5a69376d2be416d667ceab848e41cf8bb468c335 SHA-256: 7564ad8c4df212ae7ca240d3b0c166880f748a0c2be2832c06ee6b34af624ee9
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 0.9997

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://xezojetit.ru/strik?utm_term=how+to+start+data+analysis+in+python PDF link annotation
    • http://natnat.fun/income_guidelines_for_pregnant_medicaid_floridao9bxn.pdfIn PDF document text
    • http://chambre.xyz/urology_dx_codeshp9cf.pdfIn PDF document text
    • https://cdn.sqhk.co/nowonipewo/ififjbF/18135534607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477181/normal_602a0f291ddf5.pdfIn PDF document text
    • http://ecosbor.net/bodefefawajepuvdm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_60339ac037987.pdfIn PDF document text
    • http://sovumeriwox.mygamesonline.org/tasusezuwexajoxojejaxes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373998/normal_5fdc4da5708a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465257/normal_5fe57b80ddf5d.pdfIn PDF document text
    • http://kekijojovif.sportsontheweb.net/kenya_budget_speech_2020_19.pdfIn PDF document text
    • http://prosale.company/745755960037hygk.pdfIn PDF document text
    • http://masito.space/2010_camaro_rs_v6_horsepowerl6prn.pdfIn PDF document text
    • http://moymagazin.xyz/770217180316ug0.pdfIn PDF document text
    • http://nout-prokat.website/zewekosupufawapowixusoaubib.pdfIn PDF document text
    • http://vashastrahovka24.ru/widavonegesunewewuur2fv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446399/normal_604e97bf20f61.pdfIn PDF document text
    • https://cdn.sqhk.co/genonitag/6jfKcii/gogalevogubugonolofumuko.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxedanafowa/b7OfEJc/slices_menu_griffin_ga.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/ehBib73/download_game_survive_wilderness_survival_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nonabafat/minnie_mouse_colouring_sheets_to_print.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/fodoli.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 3

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_off0000ee78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE78 5200 bytes
SHA-256: c77dfd17979284bc0b2966360ccb88264516fc5885292c70468273b89dfe07bf
font_01_sfnt_off00010030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10030 11136 bytes
SHA-256: 68aa8256be83b661cde3d4d24e27864e823abe5ccae733444984c7faf6cbf59d

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