Malicious PDF — malware analysis report

Static analysis result for SHA-256 627f325caede6f2b…

MALICIOUS

PDF

65.4 KB Created: 2020-12-07 20:18:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d72d5264cb916b7289a6683979674150 SHA-1: 53a229b704be30b89b7d7112ceaef11eb8ece235 SHA-256: 627f325caede6f2b20de1373519b7cdac6369db6c3775e49d51ab4f50c05f373
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-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://traffnew.ru/strik?utm_term=n64+transfer+pak+not+working PDF link annotation
    • https://jamitugila.weebly.com/uploads/1/3/4/0/134012499/964e5.pdfIn PDF document text
    • https://fanunidepaz.weebly.com/uploads/1/3/4/4/134474969/861782ce2c589.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/3064930.pdfIn PDF document text
    • https://solusolifodijal.weebly.com/uploads/1/3/4/4/134433047/1012111.pdfIn PDF document text
    • https://karejebesowe.weebly.com/uploads/1/3/4/8/134875170/f2a9c9.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/6aa031573010f78.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/600523ea-6d73-4e4b-ad55-73b6adddda86/kovazuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d91a3a-9bc7-47dc-b099-b6d23afc81fd/90041385620.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/abcd_2_movie_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/78156771871.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/35781925557.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/koontz_lake_realty.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc141b28ef7301f8b131a8a/t/5fc4ca5afa04221c71b67af7/1606732379203/schoener_fernsehen_apk_-_android_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/certificate_of_completion.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/54423110347.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 8

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_off0000c23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23E 5404 bytes
SHA-256: 5f213f2b81acb25cd45d001ef8f3b49516c197dbb26a11e5270d81aced0d7d7d
font_01_sfnt_off0000d4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D9 10480 bytes
SHA-256: 074a314020a5c497adccc6545225bd0d8f0808624fca82fe1faf51d8baaf8ad0

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