Malicious PDF — malware analysis report

Static analysis result for SHA-256 054ee1d9e3b4ceac…

MALICIOUS

PDF

81.1 KB Created: 2021-03-18 04:15:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf33c162ed320f1ca2e9285f2e3e5d6f SHA-1: e3a7ab6be965c21c476cff07220536577b29aa00 SHA-256: 054ee1d9e3b4ceacae631ebad4b29cb1114c391df6f1cc0f0698a223bc32d786
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a tactic to manipulate search engine results or redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a phishing or SEO spam attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/123?utm_term=chakravyuha+kannada+movie+songs++320kbps
    • https://static.s123-cdn-static.com/uploads/4496810/normal_5fed4a7a3996a.pdf
    • https://static.s123-cdn-static.com/uploads/4407316/normal_5fed6545337e0.pdf
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5feed92598f12.pdf
    • http://wupunekum.getenjoyment.net/jagiworimitoxejilite.pdf
    • https://static.s123-cdn-static.com/uploads/4413109/normal_600453c4a68c4.pdf
    • http://gamuxiwami.getenjoyment.net/godrej_aptitude_test_paper.pdf
    • https://cdn-cms.f-static.net/uploads/4375690/normal_603cbbbbee720.pdf
    • http://fafesixokegigi.getenjoyment.net/15956551015.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://murapimopavopa.myartsonline.com/anthony_giddens_the_consequences_of_modernity.pdf
    • https://f72e0e13-a873-49c5-9cb5-3c2848b8c5b2.filesusr.com/ugd/f8ba4b_1bb2fee37b5e4b8f9770d8360e155901.pdf?index=true
    • https://1138278f-e8d0-45ef-aef3-dbdd7428ac52.filesusr.com/ugd/5be868_52b47b5beb02423cb7789ebeaf71ae7a.pdf?index=true
    • http://lugivodunoxasi.atwebpages.com/29299163251.pdf
    • http://lolurisufetofel.epizy.com/fimewifewekazopopopegimem.pdf
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_1ea885c7d58d4a0b8c57dd1f67c912db.pdf?index=true
    • http://tuvilijemuze.epizy.com/lund_broken_original.pdf
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_5d4a8c89336c4d8c8ea11de9b07b1509.pdf?index=true
    • http://bigapenegig.atwebpages.com/uss_biology_book_free_download.pdf
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_e0737937312844f6953e95834814c000.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd20.bin
36b0c4c43ac748cc0d69e6ff64c915150d6fceabda70a768bda7a86c8c876326		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD20 6052 bytes
font_01_sfnt_off0001118d.bin
73764dff42f7e25d1bdbfdcc6b765284be0b0bdea2778915589cf6a2b4b7e7d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1118D 11212 bytes

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