Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd6c37f712b2612…

MALICIOUS

PDF

79.6 KB Created: 2021-03-25 03:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5aed938423bf19e065dd0ee6c8e782f SHA-1: b673aba88a849855915c6a9e044217debe481738 SHA-256: 9cd6c37f712b261208c2b99ae3b81f6cdd2622e3fcd99b7038ec73e7152fac20
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs, including a significant number of PDF links, suggesting an attempt to manipulate search engine rankings or redirect users to malicious sites. The presence of external links and the overall structure strongly indicate a phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=acm+multimedia+asia+2020
    • https://dapazigozasonim.weebly.com/uploads/1/3/4/4/134466252/fotivu.pdf
    • https://jokasagumejede.weebly.com/uploads/1/3/1/0/131070006/39d550e.pdf
    • https://viforiler.weebly.com/uploads/1/3/0/8/130874197/3a9b2f49.pdf
    • http://pelabinowoguk.getenjoyment.net/b._ed_syllabus_download.pdf
    • https://voxapinave.weebly.com/uploads/1/3/2/7/132740917/987316.pdf
    • https://damokilusul.weebly.com/uploads/1/3/4/4/134463963/foborabubazamel.pdf
    • https://jedexapotup.weebly.com/uploads/1/3/4/4/134472831/risobinifezopo-magomi-geleb.pdf
    • http://tepugorotewole.medianewsonline.com/gunuzozidiruzedenalata.pdf
    • http://ralugugifoxatir.scienceontheweb.net/alkaline_vegan_cookbook.pdf
    • https://magalezofutik.weebly.com/uploads/1/3/4/5/134599277/sinaf_geguduzedesor_gejofagugus.pdf
    • https://jutoxanifi.weebly.com/uploads/1/3/5/3/135321179/xuxesuwudupir_rotapokalosizon_vobekope.pdf
    • https://gilepijojuju.weebly.com/uploads/1/3/2/7/132740412/7918482.pdf
    • https://wukarogokemek.weebly.com/uploads/1/3/0/7/130739107/9870035.pdf
    • https://bevibobozile.weebly.com/uploads/1/3/4/7/134700853/9314666.pdf
    • http://zozitaze.mypressonline.com/95233304156.pdf
    • https://bekawoxe.weebly.com/uploads/1/3/4/5/134529307/supalo_repekixane_kagiv_nojenaposa.pdf
    • https://wikejawuwe.weebly.com/uploads/1/3/1/4/131437941/b5f232252488.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5347dfb5-6d81-41ca-911e-5da91f9c08c3/kemonifimirekowezev.pdf
    • https://s3.amazonaws.com/mefovu/why_does_my_bosch_dishwasher_not_fill_with_water.pdf
    • http://domuromu.atwebpages.com/university_of_maryland_electrical_engineering_phd.pdf
    • https://s3.amazonaws.com/sajatesawodiji/brightness_app_for_android.pdf
    • https://uploads.strikinglycdn.com/files/f91c9617-7f73-4172-acfd-61a73e393f33/tixomazitujugogik.pdf
    • https://uploads.strikinglycdn.com/files/e4d63ec9-d711-4b26-afc2-bc5dce394fcc/79311168692.pdf
    • https://uploads.strikinglycdn.com/files/bf725727-f783-4981-93d8-14a476373033/rebomonagubukatil.pdf
    • https://uploads.strikinglycdn.com/files/1c370120-ca22-4dd9-8cf3-9753cd5dd22f/rafofir.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f963.bin
4fe5a308515bd8d5d6e2aeecddc94408e7345204319c8eabab2d64f6c7f396b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF963 5252 bytes
font_01_sfnt_off00010b2e.bin
2b225ae96ef6b011a645d536d04ea8a4eaa01ebf4c82631dea3e6e081a515844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2E 11256 bytes

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