Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d25a54dd4db179…

MALICIOUS

PDF

72.0 KB Created: 2021-03-14 14:45:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b6dd245fba6a2301b862e10ae08d404 SHA-1: e0de98a57015c3fe39e5d12ad4778166e3b93b97 SHA-256: 89d25a54dd4db17922fb10f2b720f42b955b92c356bc0a249303e21c67318264
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of external links, with one prominent link pointing to 'http://zogejijewur.rf.gd/bavazudogewakezakixubuvub.pdf', suggesting a link farm or redirection mechanism. The presence of numerous external URIs indicates an attempt to direct the user to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=inside+out+worksheet+b+answers
    • https://cdn.sqhk.co/duwenaxiseve/fxIXurj/susotelud.pdf
    • https://pizosamijuge.weebly.com/uploads/1/3/4/3/134348406/8097082.pdf
    • http://metagopu.22web.org/pci_compliance_report_template.pdf
    • https://puwedogomep.weebly.com/uploads/1/3/1/3/131382223/walapowamuruv_dumepeb_satav_noguw.pdf
    • https://cdn.sqhk.co/kikolibub/thbihRm/sikopixujalenezelab.pdf
    • http://mixutadumekaje.mypressonline.com/84686133244.pdf
    • https://cdn.sqhk.co/kafevinuva/UmnCPT4/ralph_s_restaurant_prices.pdf
    • https://vagipirisixo.weebly.com/uploads/1/3/4/8/134861957/lenizaranafor-pojekunef-rolakizivudi-zifiriwewijifuw.pdf
    • http://lenulari.mypressonline.com/sap_basis_full_notes.pdf
    • https://cdn.sqhk.co/vorinugobol/jjhhQii/rakid.pdf
    • http://wufamega.scienceontheweb.net/grimm_fairy_tales_movies_list.pdf
    • https://cdn.sqhk.co/dedikifefisu/Bhchehf/powamaxufawu.pdf
    • https://cdn.sqhk.co/zedozomi/4jjwrii/off_rpg_notes.pdf
    • https://cdn.sqhk.co/mejabutumu/zhZgfhb/pebidasisumag.pdf
    • https://cdn.sqhk.co/pedajobu/eagjqjf/todo_cuidado_y_calidad_bolsa_de_trabajo.pdf
    • https://tisolalaw.weebly.com/uploads/1/3/0/8/130814234/nisupopopad.pdf
    • https://cdn.sqhk.co/tizesefetus/De6gjI6/steam_download_speed_drops.pdf
    • https://cdn.sqhk.co/mudebijutene/uQgf6id/advance_auto_parts_jacksonville.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zogejijewur.rf.gd/bavazudogewakezakixubuvub.pdf
    • http://tajokuni.rf.gd/89603187868.pdf
    • http://fojupejededoto.epizy.com/98539165985.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_off0000d447.bin
e32a6cbadbcbe2879270a7a395d7666ea1c2b46c9528a7e66526be12c87f84eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD447 1872 bytes
font_01_sfnt_off0000dc9d.bin
57f398e2a8b96f6fc3a131fb6b4e64fd4a0ccf5e10d9120c73ede28f139b6f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9D 5116 bytes
font_02_sfnt_off0000ee0b.bin
73f61578ea06040dae6e5311540e591125f23b093b80af178a6b9504a8d930a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 10552 bytes

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