Malicious PDF — malware analysis report

Static analysis result for SHA-256 3517040e148b239b…

MALICIOUS

PDF

81.2 KB Created: 2021-03-18 17:21:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 222323aff8444233b1ac8fcfa2c21327 SHA-1: 0be0c62cbc780bec0d578b943555905aaa9bf794 SHA-256: 3517040e148b239b711ff827c1eb44995d30c63a78d4744c54fa49cde7dbe465
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malware. The presence of a URL related to 'grindr mod apk 2019' indicates a lure to download potentially malicious applications. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jumiwimov.ru/wix?keyword=grindr+mod+apk+2019 PDF link annotation
    • http://prostosite.site/ejemplos_de_densidad_en_la_vida_cotidiana1ldfs.pdfIn PDF document text
    • https://wexemexaxixu.weebly.com/uploads/1/3/4/7/134709907/vagat.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/dss_sample_technology_control_plan.pdfIn PDF document text
    • http://rrrrkkkkk.space/loxupoxuxakuturoxapog3iyep.pdfIn PDF document text
    • https://jukaregexiw.weebly.com/uploads/1/3/2/8/132816195/pinen.pdfIn PDF document text
    • http://oneitstore.pro/76605452404jce8z.pdfIn PDF document text
    • http://vowewudimo.mypressonline.com/pokemon_y_walkthrough_serebii.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/degenerate_distribution.pdfIn PDF document text
    • https://fipugodegiposal.weebly.com/uploads/1/3/4/6/134687615/5638897.pdfIn PDF document text
    • http://maewallace.com/jusunikexizobapulan4gpve.pdfIn PDF document text
    • https://lilonukile.weebly.com/uploads/1/3/4/7/134767916/1776200.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/20bfc152-87f3-498d-a1a1-230bc30c7717/95003988941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0840393-8f31-4f25-90ea-ef846198f986/velineon_vxl_3s_esc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe34b45-3d4d-4be9-b7ab-e160642a22f8/44394671405.pdfIn PDF document text
    • http://wukekikisowif.epizy.com/lemafapu.pdfIn PDF document text
    • http://fepebojinozid.epizy.com/jessica_mcclintock_sheets_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ece4cd5-a76d-4a5f-a670-5a09ad456fa8/27291089911.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/what_to_do_when_a_stock_drops.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/33791290994.pdfIn PDF document text
    • http://vulixinezewal.rf.gd/the_speakers_compact_handbook_5th_edition_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fec39af-d126-4d99-a8c9-7b883c9a3d18/what_is_a_breach_of_trust_and_confidence.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_off0000fc03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC03 5472 bytes
SHA-256: aadd699f351778e87dd9d9c3e0148bf39662e81d53f5bde636fda833570ba690
font_01_sfnt_off00010e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E90 11464 bytes
SHA-256: c60a3b5c937384866d99672dbbbe51f6d116d3ca7baf4a01f1c864e6c645a16b