Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a2975b97094464…

MALICIOUS

PDF

102.9 KB Created: 2021-03-25 15:22:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da0ef22c114f27ba73a876c3d6991f54 SHA-1: b474719b74620ff230ec2a866bca9faf95227e89 SHA-256: d2a2975b97094464f0ff0ca210d9ec95466ae7e23021c6d3909bc537556336c1
96 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 'PDF_SEO_LINK_FARM' heuristic. The primary external URI points to 'https://vilenefex.ru/123?utm_term=august+osage+county+play+pdf', suggesting a potential phishing or malicious content distribution scheme. While no scripts were directly extracted, the structure and numerous external links indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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://vilenefex.ru/123?utm_term=august+osage+county+play+pdf
    • https://zufufikivu.weebly.com/uploads/1/3/1/6/131637839/fegegusovetilewek.pdf
    • http://wovoradomumakil.medianewsonline.com/allegiant_online.pdf
    • https://static.s123-cdn-static.com/uploads/4504870/normal_5fedd722c14cc.pdf
    • http://nutristrike-shop.ru/value_investing_strategybil6z.pdf
    • https://didosetugub.weebly.com/uploads/1/3/1/6/131606008/2624e989410b42d.pdf
    • https://cdn-cms.f-static.net/uploads/4365583/normal_60313749c862a.pdf
    • https://static.s123-cdn-static.com/uploads/4467927/normal_5fdfb7f44dc7c.pdf
    • http://mnogoturov.com/missing_punctuation_worksheets_ks3iyggl.pdf
    • https://mekujukoner.weebly.com/uploads/1/3/4/7/134715553/3830058.pdf
    • https://popugimamad.weebly.com/uploads/1/3/0/7/130775647/7793605.pdf
    • https://rugalasaludazi.weebly.com/uploads/1/3/4/6/134683923/3c1a6cd126568.pdf
    • https://cdn-cms.f-static.net/uploads/4421934/normal_6034cae44a523.pdf
    • https://zuveravovizopow.weebly.com/uploads/1/3/0/9/130969477/891c2d45ae7e.pdf
    • http://micrometer25bill.site/whats_a_good_gre_score_for_grad_schoolvbrdl.pdf
    • https://tupedofezelazib.weebly.com/uploads/1/3/4/3/134368784/gewivumitofo.pdf
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5fea21c8a43e5.pdf
    • http://fatunatet.getenjoyment.net/embroidery_stitches_free_download.pdf
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/9612a2c4.pdf
    • http://myfirstsite.xyz/riduwevuloxesudejeswfq9y.pdf
    • https://zesudegefomoga.weebly.com/uploads/1/3/1/0/131070027/4747921.pdf
    • https://ribuxelezisif.weebly.com/uploads/1/3/4/4/134470012/4776144.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://weparaxopulo.atwebpages.com/simplification_and_approximation_for_bank_exams.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013db1.bin
a28ca26008e5bfdceaed21ddc461d25c593ff806c8f5ad5a68f0c9c43ef99000		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13DB1 5904 bytes
font_01_sfnt_off000151e7.bin
cebc114d8d8c1cdf6656ddebe58d57d073cd6482ccf14427fc88a16ce197c654		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151E7 5316 bytes
font_02_sfnt_off00016428.bin
c0c46a70e32b65dc34f5bf5bdc43990e48f9af39c13a34c987cb360284332dc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16428 12240 bytes

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