Malicious PDF — malware analysis report

Static analysis result for SHA-256 abac5eb7778b8c74…

MALICIOUS

PDF

89.9 KB Created: 2021-02-20 22:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e9baa8546475435a4f91aac74e5ef1c6 SHA-1: d2e194d03951410e551308ad3eb4f50ad6347923 SHA-256: abac5eb7778b8c746e0c2a696be9de81105b0d950f2c1d370e3c3b87452ef8fc
156 Risk Score

Malware Insights

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

The PDF contains multiple external links, with a critical heuristic identifying it as part of a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to harmful sites.

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://baarspo.ru/123?utm_term=el+secuestro+de+la+bella+durmiente+pdf PDF link annotation
    • http://tesiwonogi.iblogger.org/inheritance_gizmo_answer_key_activity_b.pdfIn PDF document text
    • https://vususutuf.weebly.com/uploads/1/3/4/6/134634118/8c5b92c3658f.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/gawabog/ntr_biopic_songs_telugu_naa.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/jetson_nano_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/boom_beach_happy_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/arjun_telugu_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/banjo_music_video.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/mergers_and_acquisitions_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/burr_coffee_grinder_reviews_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/besopimewamileti.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/17749793511.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/togajitifeti.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/57722362811.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/24292567297.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_off00011f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F25 5400 bytes
SHA-256: bd0bc0dc5199e1e0595e5d52d4261a2d119a2fe2b3ec86e45bee670df22b023a
font_01_sfnt_off00013167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13167 12164 bytes
SHA-256: 5ce5fab8f871e9f12caaf802822dd888fbafa92defa77379125c00fdfddbfca9

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