Malicious PDF — malware analysis report

Static analysis result for SHA-256 3edd1acf6322f39c…

MALICIOUS

PDF

84.5 KB Created: 2021-02-18 04:45:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4df2297de2257bf4f6a0f246056162d2 SHA-1: fbc2199e5ec3ac42b10517341387634fdbbf9dc4 SHA-256: 3edd1acf6322f39cfbf90992b37031fb736393c6957ca0b9efd870adeaab32a3
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an external URI pointing to a URL that appears to be a lure for a printer manual, likely intended to trick the user into downloading a malicious payload. The presence of multiple embedded URLs further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/aws?utm_term=samsung+c460fw+printer+manual PDF link annotation
    • https://cdn.sqhk.co/jijasitov/hishcOE/68551010004.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378855/normal_5ff6b53943319.pdfIn PDF document text
    • http://nat-fru.space/red_sunflower_seeds_for_salewfd4k.pdfIn PDF document text
    • http://stavki.link/joseborumezujawcdz1m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481985/normal_601e730f04fc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393348/normal_5fdd9ec408473.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373527/normal_5ffccb9bd38c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366358/normal_5ffbcbdbea2e6.pdfIn PDF document text
    • http://littlenat.space/prestige_medical_advance_b_autoclave_manual9tsjf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447466/normal_6008430bba29e.pdfIn PDF document text
    • https://cdn.sqhk.co/gasukatebu/KQ9tjii/sprinkle_island_mod_apk_unlimited_water_android_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479213/normal_5ff03c0d578c0.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/UPQoxFT/school_business_manager_job_description_secondary.pdfIn PDF document text
    • https://cdn.sqhk.co/ravawiku/3vigfgf/jutanure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476133/normal_601a7eadc1981.pdfIn PDF document text
    • http://spiritstudio.ru/zugimibupuv9toa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392444/normal_60061cd8185e6.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/titugome/28178120804.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/49070945771.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/bullet_head_2017_movie.pdfIn PDF document text
    • http://guzedero.rf.gd/tupagaper.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/pizza_party_flyer_free_template.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B6 2968 bytes
SHA-256: c3535dd41476eebf6ac32815e39482f32909ce4a3dab0c33feaa9cf7a3447b7d
font_01_sfnt_off0000f24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24B 5912 bytes
SHA-256: e91971918ca8e6345fe5319ecb9cfb01b6a7e665f7bf3a73562be4d8cba6a477
font_02_sfnt_off0001066c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066C 12684 bytes
SHA-256: 4af5055045ef22a819c28a0d533358cc121cd5197468d69a9de1932b1b8b2b8f
font_03_sfnt_off00012ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EE1 16060 bytes
SHA-256: 8f676b3be356e2086f34f7c81dd3575184be90372cbe0b4aaba7ba30be3377d2

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