Malicious PDF — malware analysis report

Static analysis result for SHA-256 61216f85f6c359f7…

MALICIOUS

PDF

79.8 KB Created: 2021-04-01 02:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d7b80c5a4f5115d1c86001c66018486d SHA-1: 3ebf51026350d3a56fa932380d72a28b3274b0df SHA-256: 61216f85f6c359f7e949c098e2fa56e5850466f300fea93ae791206d94d0cdca
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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 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.
  • 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://golowaki.ru/aws?utm_term=hamilton+beach+durathon+digital+iron+reviews PDF link annotation
    • http://8bitbeardsco.com/90418110247gfmhs.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/ihjjUI2/33179061001.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/jeJMpTz/bubble_tea_flavors_near_me.pdfIn PDF document text
    • http://x-bionic.shop/how_to_learn_stock_fundamental_analysistdjwk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456399/normal_5ff8584123445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_603559428117c.pdfIn PDF document text
    • https://cdn.sqhk.co/tezakagadol/ah1jvje/temple_run_online_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/2nk6oBL/drought_tolerant_plants_for_hanging_pots.pdfIn PDF document text
    • http://cupe1.ru/653646100763rj1g.pdfIn PDF document text
    • http://itash.space/pole_vault_stick_pricehr5ow.pdfIn PDF document text
    • https://cdn.sqhk.co/pewesopefim/djahfII/patogenesis_hernia_inguinalis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413563/normal_605f7c1183153.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/boduxatavepe/gevofewojujik.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/vefal.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/indiana_attorney_general_contact_information.pdfIn PDF document text
    • https://f8b2de7a-6012-4721-b8f1-df5267d6bb95.filesusr.com/ugd/8ebb60_2cc031cb73954f73a58c299279dee695.pdf?index=trueIn PDF document text
    • https://5053e88e-9e18-4719-890c-32a1cca0295d.filesusr.com/ugd/411503_74c33b33245b4e5f9a5d4e059be31c51.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gateme/36051074871.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/australian_dog_breed_information.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_off0000f6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D9 5608 bytes
SHA-256: 4519a558d57371c41d9ba39920973f8513293edd74d4103c64451e0ae7a50593
font_01_sfnt_off000109c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C6 11216 bytes
SHA-256: 17224a7f927a7ec98d0fb962a51cff415b952d205956850bbb0ea3be57bd523c

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