Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cfb7f390d311d6c…

MALICIOUS

PDF

75.5 KB Created: 2021-03-04 20:03:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 2b14f8994f6f3a7d96e6a5f6945d9a29 SHA-1: 4b3aa9479d7a89f4b36e9345e3d27f6bc352012d SHA-256: 5cfb7f390d311d6ceb5689bf5eca11525cb0d423174c56f209582e8f780995fb
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, https://leonvi.ru/strik?utm_term=monster+in+paris+full+movie+watch, is suspicious and likely leads to malicious content or a phishing page. The ClamAV detection and ML classifier also indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=monster+in+paris+full+movie+watch PDF link annotation
    • https://wekosidofanepa.weebly.com/uploads/1/3/2/6/132696212/bomuti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444623/normal_5fe0ddb76a6a6.pdfIn PDF document text
    • https://nipixajivoru.weebly.com/uploads/1/3/1/4/131436983/pafuvuzevofa_seposigusona.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417329/normal_5fe639856755f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377706/normal_5ffad57e4b852.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402717/normal_5ff9555a4c477.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376099/normal_5fd06db053240.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/sowewazulejewi/91051949328.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/icsp_header_full_form.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_f15e6f840830495e9453133d400f2c6c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d821d898-ae3c-4356-8452-c57b58942fd1/pofebufanuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3ae543-565c-4444-a5f8-c26ba7ba9343/frankenstein_mary_shelley_chapter_5_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/merevajober.pdfIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_658c0b1f5b594e83bf2a133c05cabc5d.pdf?index=trueIn PDF document text
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_c0c67a2eb0fc433984169a3d06f7f55b.pdf?index=trueIn PDF document text
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_b3d77c1536204ecabf48083056f91803.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/givojuxenutulufule.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/imphal_airport_weather_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2bfb98e-21eb-4a6d-b456-c65f334e582e/medijixusofemavavowakuna.pdfIn PDF document text
    • https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_8220c12c0af54dd68335d6cae1943f70.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/815f8e97-58b4-4f4c-a305-83af5d36dcc7/verbos_regulares_e_irregulares_en_ingles_en_los_tres_tiempos.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_off0000e857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE857 5412 bytes
SHA-256: 716fd181627e6135bb17e7776673fdc384d38a99ce3293c180cd9ede6cba01ad
font_01_sfnt_off0000fab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB8 11352 bytes
SHA-256: 6e0b6bebd0c3f9b6ebbffa606c22654f55dbab21c3971f382e360531a434c3e1

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