Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9d62ba19750c05…

MALICIOUS

PDF

77.7 KB Created: 2021-02-24 22:56:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a17a12c1f45fdf1bdf4bc22f5b63a45f SHA-1: faf12c5db18a22d40d2cf7ae459efea4a2c0a3ba SHA-256: 9d9d62ba19750c05be9689a14f000dfa3610a890e9ce2b6519b10f4712bae3e6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded URLs, with one pointing to 'baarspo.ru', which is flagged as suspicious. Heuristics indicate the PDF acts as a link farm on disposable hosting, suggesting a phishing or scam attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. The document body, though heavily obfuscated, contains keywords related to job salaries, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/123?utm_term=construction+senior+project+manager+salary+boston PDF link annotation
    • https://cdn.sqhk.co/ruwonumatag/eibnR3D/19552745066.pdfIn PDF document text
    • http://dovamemowiruz.iblogger.org/latest_android_version_10._0_name.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/ejhzXtT/g_cloud_backup_for_pc_download.pdfIn PDF document text
    • http://pepojen.iblogger.org/86328218164.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500677/normal_5fdf678bf1cbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502817/normal_5fe7d527a49d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370265/normal_6011a35779b8d.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/iR63hfy/46853955099.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/jagcjjJ/50244200005.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375698/normal_5fdca8d974d27.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/hfdij0I/infinite_flight_simulator_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/hjbigji/63421168449.pdfIn PDF document text
    • https://cdn.sqhk.co/jojikoxazew/ZgdCjfF/mibefujemaf.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxozamikoge/whbg4je/stumbled_upon_meaning_in_telugu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/taguxif/vimanam_song_kuttywap.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/betin_app_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/futufeveludefoxeziduwox.pdfIn PDF document text
    • http://bosefijov.epizy.com/gijaxopasedebiwebes.pdfIn PDF document text
    • http://kexasejuwodeji.epizy.com/wimolimapelusujejefutu.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_off0000f290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF290 5476 bytes
SHA-256: 39abb43925e6dd2487900715bda43c109021b6673fb9bca265970382123d8950
font_01_sfnt_off0001051f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051F 10480 bytes
SHA-256: f3077a55fa20e464f4e9dbf03ee88de00ae833256122787c45af63557f29af5e

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