Malicious PDF — malware analysis report

Static analysis result for SHA-256 30719b0f7bcb0bdf…

MALICIOUS

PDF

85.4 KB Created: 2021-04-02 22:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4981f66e92300b3a5c6903370dfcb0a0 SHA-1: d14579dbb07e0a317273e27cdbff8dadfb020a23 SHA-256: 30719b0f7bcb0bdf33a6517c1ee11ac52d077afcbcbb8c546393999a0b679bf8
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous embedded URLs, with one prominent URL pointing to a link farm designed to redirect users. The document body, though heavily obfuscated, appears to be a lure related to sheet music, suggesting a social engineering tactic to encourage users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=beethoven+symphony+5+violin+1+sheet+music
    • https://zevijilutijeso.weebly.com/uploads/1/3/4/8/134850931/137674.pdf
    • https://tudogevu.weebly.com/uploads/1/3/2/7/132741144/xupokosixomego.pdf
    • https://wajonurogizi.weebly.com/uploads/1/3/0/7/130738566/xubojagu.pdf
    • https://gevexewu.weebly.com/uploads/1/3/4/0/134018209/buganerovepide_valex_viregolut_nizevifawevijag.pdf
    • https://cdn-cms.f-static.net/uploads/4467278/normal_6030d5e0b2e7e.pdf
    • https://cdn-cms.f-static.net/uploads/4393345/normal_6039509c2c03f.pdf
    • http://copriyghtconfirmed.com/readings_in_philippine_history_bookdw1lj.pdf
    • https://cdn-cms.f-static.net/uploads/4367642/normal_6014298b1d20a.pdf
    • http://my-favshop.online/nulutedafopukivem5gxek.pdf
    • https://rorogujelid.weebly.com/uploads/1/3/4/7/134702732/9c085b7e3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7d40f0b2-8bac-4656-bf8e-9d60b766fd03/71229810184.pdf
    • https://uploads.strikinglycdn.com/files/af793c65-da93-42f8-b9bb-12f4f244397a/polk_soundbar_help.pdf
    • http://zawunutisozapo.epizy.com/flint_michigan_child_support_phone_number.pdf
    • http://lemibutudigosuv.rf.gd/mera_bhola_bhandari_dj_remix_song.pdf
    • https://s3.amazonaws.com/sisaxu/repuje.pdf
    • http://bulalejovadidov.rf.gd/dolukemavavemoxajotuvoto.pdf
    • https://uploads.strikinglycdn.com/files/6830ae0c-7061-46b4-b806-70326a773378/50116701572.pdf
    • https://uploads.strikinglycdn.com/files/78ed5a9c-a4d1-4b90-860b-4e9c4914bc7b/davinci_resolve_15_reference_manual.pdf
    • https://s3.amazonaws.com/kuxegu/xevowol.pdf
    • http://gaxufaxurawago.epizy.com/rgles_d_orthographe_d_usage.pdf
    • https://s3.amazonaws.com/mekonulegipero/ereports_employee_login.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed61.bin
50fe64b4220e390e858add41d5390554765a91799e6e40efaa9ca2ce76dc48d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED61 5256 bytes
font_01_sfnt_off0000ff38.bin
f93542dbf11e1b78b0e03947724839818dd350ad06a5f6d49fbf9462215d74ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF38 2060 bytes
font_02_sfnt_off000108df.bin
50a6fa3072fcdb5885254d0675b99ccf12711fad679983f4f4b735670df04aea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108DF 12560 bytes
font_03_sfnt_off0001307a.bin
4360e29b7d2504916afe74d557016965ce00ddb6e9b1d1498b998f2d7a1046f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1307A 16184 bytes

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