Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc98198868309672…

MALICIOUS

PDF

87.2 KB Created: 2021-04-05 10:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 389a66e7c3cf389b7d612bef3b79a9bb SHA-1: cb2621c0c0b592974ab951cf7e3ca4f3ccbcd68a SHA-256: cc9819886830967211df3f2b87e534671ce210536bffa78f98571d03c7c3a62f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into downloading further malware or visiting a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'fit for life book pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://crophysi.ru/strik?utm_term=fit+for+life+book+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501029/normal_5fdc6322f1d8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414332/normal_602376666dbb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473619/normal_60470f8e423aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459027/normal_60546ad608e87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484118/normal_6041caa30257e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417213/normal_6011f0bf65d33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451756/normal_5ffca5743be41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413226/normal_604a83a561fb6.pdfIn PDF document text
    • https://go.bestbookbits.com/freepdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tapelu/jelimenuginadopekatoxaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17f05a8f-b6dc-4c88-ad71-ce1125643815/65685829583.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/arris_surfboard_svg2482ac_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6d59431-4a68-4bac-8cc6-fa587fb4abcf/is_it_worth_replacing_kindle_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f01849-819d-4fd0-8b76-f5c5feee5d03/does_t_mobile_one_plan_include_hotspot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff836e2-79e9-469d-b483-9b520f6474a9/how_to_trade_stocks_on_iq_options.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/audyssey_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/twilight_saga_new_moon_free_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/47531335398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2b1d68e-b993-4b10-be51-049b7e9ab05a/95899387045.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd926a2c-d719-4a44-b324-3e1dab7c2ebe/19811362347.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF716 4804 bytes
SHA-256: 50059f0d791a6f1fe8d385d75968ffcf48b94810a9b112976e1b343233c078ca
font_01_sfnt_off0001076f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076F 3008 bytes
SHA-256: 5e46820c45e13bf90bf6dd3f0d29015d6a825dc885c8901e9535caa679c5fae7
font_02_sfnt_off00011422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11422 10588 bytes
SHA-256: f407b31f4e245fed758fdb71ca543362f56756ce807c74ccd205bf67b0e9ee59
font_03_sfnt_off0001387c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1387C 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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