Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb779d3318114a1d…

MALICIOUS

PDF

82.9 KB Created: 2021-05-28 11:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e431c8e724b67378495f103810e927cc SHA-1: ef77dd2c8ad8a37161983eceade39858f9030fef SHA-256: eb779d3318114a1d29581be588cc8138f4a86ad6df4202d5ed149e00402d728f
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by both ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The primary external URL, 'https://soxebez.ru/strik?utm_term=can+you+get+banned+from+pokemon+go+for+gps+spoofing', is likely the intended destination for victims, disguised by a question about game cheating.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/strik?utm_term=can+you+get+banned+from+pokemon+go+for+gps+spoofing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386073/normal_5fdb9ed058c6c.pdfIn PDF document text
    • https://rodekimixew.weebly.com/uploads/1/3/4/3/134314341/2621493.pdfIn PDF document text
    • https://nowitijot.weebly.com/uploads/1/3/4/7/134716658/musivevefebu.pdfIn PDF document text
    • https://zavenikalob.weebly.com/uploads/1/3/4/2/134234813/natasapedujine-zisulowivu-levenebamezow.pdfIn PDF document text
    • https://vavixama.weebly.com/uploads/1/3/4/4/134471840/2243718.pdfIn PDF document text
    • https://xuduburuk.weebly.com/uploads/1/3/4/3/134323667/maxetawaluro_bozizulekig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_604e1701793d8.pdfIn PDF document text
    • https://nilumasukezag.weebly.com/uploads/1/3/4/4/134401113/7528243.pdfIn PDF document text
    • https://danimaxo.weebly.com/uploads/1/3/5/3/135388986/90e2bcce5988ff.pdfIn PDF document text
    • https://wivaxuzavegisi.weebly.com/uploads/1/3/4/7/134769578/f889b1ff.pdfIn PDF document text
    • https://sekulawovow.weebly.com/uploads/1/3/4/5/134578441/a78d411.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465688/normal_5fe4027f89d45.pdfIn PDF document text
    • https://radasezase.weebly.com/uploads/1/3/4/6/134643415/6897589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425916/normal_605d477ed7ec4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470967/normal_605fef7336467.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/26143d57-68fe-4282-ab73-6a39d42ecacb/revewarop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161a151f-7e90-43bf-b12d-6bdaccedd9fc/what_does_cast_out_mean_in_the_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38affb7b-aaed-4449-b870-1a1d0854e4e0/17403879164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e36513a-395a-4f2c-81ff-84bd40e80091/20970379327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9249e34d-3f7f-48ce-8a78-e1b479a6093f/61664622983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/592db79e-5118-42b5-bcd7-f474860c170f/lawegafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12de2181-00eb-4f66-b244-c51f5ec04a49/the_courts_of_heaven_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e186584-6df7-4ea3-b903-3f8af3ac8e34/66521765392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f7cde49-6222-44f9-8aa0-486f741b9cb8/what_is_a_literature_review_in_an_apa_paper.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_off000100c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C3 5540 bytes
SHA-256: 1fee955b962fb396028568e8c8158462e724db5679cb2a616f03f287539635ec
font_01_sfnt_off00011390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11390 13464 bytes
SHA-256: a92a74d97ca7d8f19ca90292cab5038b91cd55842a6d89fc0d92a5ba0ac5cf51

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