Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d57978a1f49dcc…

MALICIOUS

PDF

85.6 KB Created: 2021-07-14 00:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fcbc3967bfbb7aa6ec32e6af812d3f11 SHA-1: 6507b61690908b1a5a711f87d0873e03308ee5cc SHA-256: 63d57978a1f49dcc92f5e985738f693039831ab0954a11c0a99b75ab38431d8d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that, while flagged as benign, is part of a lure to direct users to a potentially malicious resource. The document's structure and embedded content suggest it is designed to exploit user trust, likely through a spearphishing attachment, to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/v-xubMviL4Y/square?utm_term=jobs+and+work+vocabulary PDF link annotation
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7b0d8bb04542cee39bc0/1626110733707/botunatupesivirimet.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edd71ea0f2ca3483d1320e/1626199838445/i_want_to_be_mute.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edbc5d3b2f984ee883a170/1626192989466/76965035316.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee07b510369373fd88556e/1626212278153/dusebemifuvetujo.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7fc1de8c3264fe5e8916/1626111937553/commission_agreement_letter.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edaf4b3680ef421b566e25/1626189643703/ninuzexirilusuxosunapazax.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee03be017ec663b54080b5/1626211262375/francis_carey_organic_chemistry_solutions.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee0184670c344ea760b2a4/1626210692875/21181944716.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9626cf492d21a0f6cb989/1625907820797/willie_nelson_amy_lee_nelson.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed9d1d1a2ce466740be306/1626184989776/75964529192.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e87a1d65cc8c2003ecaa8b/1625848349437/87375983391.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA74 17432 bytes
SHA-256: ae8f556bc1c937e9cb32daae2a6ce549d1b1687b370b948caa5687bc9c9e7d4f
font_01_sfnt_off0001183e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13055 10628 bytes
SHA-256: 90f0d7dc9237e6cafc546826e2ec26844f5635e8e4b574cad2129b9164533de1

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