Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed111351195f3a54…

MALICIOUS

PDF

74.1 KB Created: 2021-03-14 18:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cb9489ffc640c03ff4c9f06c97376984 SHA-1: a5d0b18f0d26b4b97fc9facb132f57bca81d6ce1 SHA-256: ed111351195f3a54a3349695b9622d6ee767a118408b964c6bdfdf34453257bb
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used for SEO manipulation or to redirect users to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to drive traffic to potentially malicious or deceptive web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 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://maypoin.ru/wix?keyword=the+pebble+and+the+penguin+drake+gif PDF link annotation
    • http://sagunutu.medianewsonline.com/where_can_i_buy_a_song_of_ice_and_fire.pdfIn PDF document text
    • https://zinegekoxemajaj.weebly.com/uploads/1/3/4/7/134767253/selejemed.pdfIn PDF document text
    • https://fibetenozogu.weebly.com/uploads/1/3/0/8/130813768/laloxikipiwolifoje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407989/normal_604645a10190a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502175/normal_5ffc4d9b1621c.pdfIn PDF document text
    • http://weinmvc.net/wesinofx8ez.pdfIn PDF document text
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/sebonewizewukajezug.pdfIn PDF document text
    • http://iqecoportal.ru/prescription_formatsc6yf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484997/normal_600f429f4a600.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xobibaga.myartsonline.com/galaxy_note_20_ultra_review_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4f961c-f787-40d8-aea5-cdd4be093abb/jikewilizejogewav.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/wedalapitezubuxodozed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f7d5273-69c1-4a86-9ecb-44a5b70bcda7/bufugutamakipesagapo.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/88450619458.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/woserirobolepiluwilopus.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/mevaliredibuz.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/how_to_change_time_on_casio_sgw-500h.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_off0000e46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46D 5280 bytes
SHA-256: 575b08feeb95dde80cdf74133be911ae05bd7fff9645a5f5ad58bf284f47e658
font_01_sfnt_off0000f657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF657 10876 bytes
SHA-256: 68700f1f36547932aff4a3ed84f10fad3f5e1c73e5b26be075aeeadb175b0def

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