Malicious PDF — malware analysis report

Static analysis result for SHA-256 78edcba3bea3a7bc…

MALICIOUS

PDF

76.8 KB Created: 2021-03-23 17:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 125595bf05311be9388f50c59b61ea40 SHA-1: b200220fc3273d345025a81ecc8420650ad3ecec SHA-256: 78edcba3bea3a7bca28608e21c8bd5db9e4a2200fe16bac26a4b7fcac1f1134e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to potentially malicious domains, indicating a link farm or phishing lure. ClamAV and ML classifiers strongly indicate maliciousness, with specific detection as 'Pdf.Phishing.Trojan'. The embedded URLs suggest the document's primary purpose is to redirect users to external sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/wix?keyword=the+complete+peanuts+pdf
    • http://prizinsta.online/10287232978s3kcb.pdf
    • http://creditreportfast.info/tomabewapazewoziv3gwfc.pdf
    • http://springital.fun/28374551215hivti.pdf
    • http://itactical.xyz/mevonar8qo4o.pdf
    • http://form-lnstagramverificationbadge.com/drill_down_report_in_ssrs3eym2.pdf
    • http://goodsfor.life/649246630056q8h4.pdf
    • http://demask.space/denufiwiwubevajo9bdx7.pdf
    • http://copyright-rules-help.com/5833490070f6ceh.pdf
    • http://nikecortez.net/the_holy_quran_text_translation_and_commentary_free_downloadwk0dh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://femasusatatovet.epizy.com/johnny_b_goode_sheet_music_piano.pdf
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_2447578b22534c10bf87531ccf62c87a.pdf?index=true
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_5d601c61522d4c02a5d0c264790790ee.pdf?index=true
    • https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_5d311ee671f44ade957e5ccc8a87562a.pdf?index=true
    • https://s3.amazonaws.com/begijufadi/xomodiraw.pdf
    • https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_c1bbcac0e9354ecbaaf3fb64fe864308.pdf?index=true
    • http://jezeladi.rf.gd/what_are_the_examples_of_functional_analysis.pdf
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_4e6543e1fcc9456a8a0b49f6a96963d9.pdf?index=true
    • http://xuxusemo.epizy.com/seagate_srd00f2_power_supply_amps.pdf
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_62a5094b53684159808fb51fc937cfc5.pdf?index=true
    • https://s3.amazonaws.com/lumixi/paint_cabinets_with_sprayer_or_roller.pdf
    • https://4eb83289-b313-4542-b68c-79a1d4783db4.filesusr.com/ugd/f6336d_23e87c13c41c4e7fa8a70ef0ff6f7b96.pdf?index=true
    • 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_off0000edd8.bin
161d68599cc8b6aa0a970d1ba2a7f32a68ea4e4dae8be4feb1c0d3c7cdf97ec4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD8 5248 bytes
font_01_sfnt_off0000ff8e.bin
571d0dbe550b51faffd9dccb676178f87b6816bcde76d6c694e05498615fe88a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8E 11308 bytes

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