Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f7ca5479d155064…

MALICIOUS

PDF

79.3 KB Created: 2021-01-17 15:05:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: bf92dcb5c5678d797d5f812f783179bc SHA-1: d20afeb99aea05746ebcb351f48e3272e2908111 SHA-256: 5f7ca5479d155064e0518362747c40c06fbd3e798aefd854110a7bdd42337073
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains a large number of external links, many of which are hosted on disposable domains or cloud storage, suggesting a link farm or distribution network. The document body, though heavily obfuscated, contains text related to a movie download, which is a common lure for phishing or malware delivery.

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://traffnew.ru/aws?utm_term=aashiqui+2+movie+video+mp4 PDF link annotation
    • https://midejewafefo.weebly.com/uploads/1/3/4/0/134000268/ragajipitaja-viporub.pdfIn PDF document text
    • https://wukodotimage.weebly.com/uploads/1/3/4/4/134487216/xukasegomobupix.pdfIn PDF document text
    • https://cdn.sqhk.co/dikabopagesi/ZzVZETU/download_guns_and_glory_heroes_mod_apk.pdfIn PDF document text
    • https://vapiwoke.weebly.com/uploads/1/3/4/3/134338270/gasavanemin-xigifas-guximube-zovud.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/6011778.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453914/normal_5fdcd1ca1889f.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/8311065.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f8e50c9c5c64.pdfIn PDF document text
    • https://fuzujaloxoz.weebly.com/uploads/1/3/4/6/134684853/54196a0558fbdb.pdfIn PDF document text
    • https://cdn.sqhk.co/daboxazile/SjMEzjU/84710188612.pdfIn PDF document text
    • https://fetesebi.weebly.com/uploads/1/3/4/8/134896421/cc4ef97fe53356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f928c6c6b06a.pdfIn PDF document text
    • https://cdn.sqhk.co/pubodegosog/hHJGjd9/educational_nursery_rhymes_songs_with_lyrics_and_action.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/f2198.pdfIn PDF document text
    • https://vejazisiji.weebly.com/uploads/1/3/0/9/130969480/4432571.pdfIn PDF document text
    • https://tawisowa.weebly.com/uploads/1/3/5/3/135315305/vafonogil.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/xarojapi/converter_para_dwg_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/informational_text_structures.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/tazetuxorefotepekozige.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/65206260964.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_off0000fadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADC 5468 bytes
SHA-256: 8c40c1b6b7efa7f9506f075726cb6334e5a40bb10de04b4ee6ed41cc4839102d
font_01_sfnt_off00010d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D60 10100 bytes
SHA-256: fbb8bb7cdecf5f10ebe075b27dda7412b6be6c593e457af661cf897c9f898bc3

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