Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d97d138e4bbc5e8…

MALICIOUS

PDF

67.2 KB Created: 2021-01-19 11:18:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: de6b697db17d9cbc9b1fc45ac264122f SHA-1: f144f34ffcc9bd49b09c3ee1acd5fe51f1f6eb07 SHA-256: 1d97d138e4bbc5e8e095143d12227e66291ddffade2c3fb613fba986d9892dfe
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a high concentration on disposable hosting and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, contains a search query for song lyrics, which is likely a lure to disguise the malicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/123?utm_term=guide+me+o+thou+great+jehovah+lyrics+and+chords PDF link annotation
    • https://site-1171371.mozfiles.com/files/1171371/31348239128.pdfIn PDF document text
    • https://site-1168481.mozfiles.com/files/1168481/37591834981.pdfIn PDF document text
    • http://buvavarosavadar.iblogger.org/lil_yachty_riley_from_the_boondocks.pdfIn PDF document text
    • https://site-1178208.mozfiles.com/files/1178208/wuworazafedado.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/hcijQjb/wodavexaxedekewalure.pdfIn PDF document text
    • https://site-1223962.mozfiles.com/files/1223962/spreadsheet_compare_2013_install.pdfIn PDF document text
    • https://site-1168027.mozfiles.com/files/1168027/unicorn_horse_games_free_download.pdfIn PDF document text
    • https://site-1168131.mozfiles.com/files/1168131/wetarigosa.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/m2eibzl/pebolipimojepixof.pdfIn PDF document text
    • https://semezuzuxikazug.weebly.com/uploads/1/3/4/2/134234688/difiniboganef.pdfIn PDF document text
    • https://site-1176222.mozfiles.com/files/1176222/18897901122.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/dqheYur/epic_heroes_war_hack_game_download.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/jamekutodinube-tuwedil-jekowibesefo.pdfIn PDF document text
    • https://site-1179818.mozfiles.com/files/1179818/baseball_card_traders_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://davafegi.epizy.com/verbs_coloring_worksheets.pdfIn PDF document text
    • http://kojaburu.epizy.com/74165770998.pdfIn PDF document text
    • http://gogewarixisude.epizy.com/jazz_guitar_arpeggio_patterns.pdfIn PDF document text
    • http://sunuwib.epizy.com/descargar_aptoide_para_pc_apk.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_off0000c803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC803 5624 bytes
SHA-256: d84bcc49e8627e7245ada56215a33f02e8492efdff13affae65977bf41f93398
font_01_sfnt_off0000db08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB08 10160 bytes
SHA-256: 7aa45707f154ad1fa77412c7f70d3588a4a1fd5ad8f1d8244eb40ec29a4ce465

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