Malicious PDF — malware analysis report

Static analysis result for SHA-256 17292ecbbd858798…

MALICIOUS

PDF

73.2 KB Created: 2021-03-17 21:58:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 746901986a6da389d444e2adc27dd648 SHA-1: 1277f2157e2e958ea8958ec772e3f53b4423369a SHA-256: 17292ecbbd858798999e9d72e4b14dc249c3ec8fb0a2622088f9095be97d32f5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://pelibifir.ru/wix?keyword=lord+of+the+rings+writing+style+generator PDF link annotation
    • http://texifudosino.mygamesonline.org/1740760142.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/ropavabarelug.pdfIn PDF document text
    • http://sukuwodexi.scienceontheweb.net/samsung_55_inch_curved_smart_tv_wall_mount.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/how_much_does_a_3.5_ton_trane_ac_unit_cost.pdfIn PDF document text
    • http://nipizakevenuvis.scienceontheweb.net/rebad.pdfIn PDF document text
    • http://wijutomotagam.mypressonline.com/lumakerinogafixa.pdfIn PDF document text
    • http://libuwapuvewipev.mywebcommunity.org/55491072771.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/fisiopatologia_del_absceso_hepatico.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimogotewebi.epizy.com/cameo_greatest_hits_zip.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/dalubefolesemoluka.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/99592932172.pdfIn PDF document text
    • https://7f2467c6-0d80-4e38-8df7-27624e0b9669.filesusr.com/ugd/e19533_c1b2623dea6a4b7eac052a765bd5690d.pdf?index=trueIn PDF document text
    • http://lifapalifarivug.rf.gd/6510812437.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/60053413604.pdfIn PDF document text
    • http://sobakijej.rf.gd/barking_up_the_wrong_tree.pdfIn PDF document text
    • https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_811171745a374a3f86352e1c37e301e6.pdf?index=trueIn PDF document text
    • http://kubowulurarekij.myartsonline.com/kujexobegir.pdfIn PDF document text
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_ed5903f36ec546f7b06a8ade102ac71d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zonebon/49937712955.pdfIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_a38e0c8371f74eee828496d5c45b6347.pdf?index=trueIn 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_off0000e11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11F 5304 bytes
SHA-256: 256500a6daa1ea1fe947f0042709e4567fada49f23c3f1569fa8d9f0a0e326ea
font_01_sfnt_off0000f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 10692 bytes
SHA-256: 85375785cd71ef3f7b40f3c83f269af8fa4c1c72bedbde42bbc5dafa07786fef

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