Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae2cfaebff78148…

MALICIOUS

PDF

76.4 KB Created: 2021-04-04 08:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c2f25fdb03c94e12c3c77c3f36c98011 SHA-1: d853c4962aec448cfd652933044961984eff5a20 SHA-256: 4ae2cfaebff78148611320eeef8a3110344f567acebfe856de05225e2a1fe24a
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://soxebez.ru/strik?utm_term=graco+pack+and+play+setup+directions PDF link annotation
    • http://parewizukesez.22web.org/kotirurobezesaf.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/4790895602.pdfIn PDF document text
    • http://matizaw.mywebcommunity.org/boat_owners_manual.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/82022982828.pdfIn PDF document text
    • http://nokekowukubu.22web.org/brawl_stars_apk_for_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mikotavorekibe.rf.gd/76977122396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e18dd7-07aa-4090-9f74-1bd36725d5f7/lubonos.pdfIn PDF document text
    • http://tunadexemuvaru.epizy.com/losobexupato.pdfIn PDF document text
    • http://latarugumajovi.epizy.com/bow_tie_pasta_with_sausage.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/44990523238.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/yajur_veda_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/44800393102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d6a225a-21f6-40b7-a4ba-b8c06fca4fec/coveted_meaning_in_annabel_lee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54519866-3849-4621-a9f2-d78b4ffbd2a6/11801765252.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d057dd7d-39af-4ae3-8ea6-3da34f988e18/brown_v_board_of_education_def.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bca2a91-bdeb-4273-a797-373d46cebdb0/gekufumusofuj.pdfIn PDF document text
    • http://movebuze.epizy.com/34573882951.pdfIn PDF document text
    • http://magikid.epizy.com/chloroform_spray_buy_online_flipkart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cbb6e27-bd35-4eaf-9642-b3750cf2016a/weber_genesis_2000_grill_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/653f3f95-0daf-48ea-bd83-70089b014a8c/vojijusad.pdfIn PDF document text
    • http://felepav.epizy.com/manualidades_para_dia_de_muertos_para_nios.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_off0000ec61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC61 5264 bytes
SHA-256: ffc9fb9095fe4c93578ae5f8fb02bef5d95e00599bfc2d51652bfa2c9ec546fd
font_01_sfnt_off0000fe63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE63 10664 bytes
SHA-256: a181f3c92444fc54b7058cb6812105b414ad42bd30f4e5bec3b45b6a9f1011c4

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