Malicious PDF — malware analysis report

Static analysis result for SHA-256 baff6e6c0db97cfc…

MALICIOUS

PDF

76.9 KB Created: 2021-03-19 06:12:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c50b993f87f1808781eae58842ec559 SHA-1: b9063ff55395dd1c29892644fd8eae7b7d5d74bb SHA-256: baff6e6c0db97cfc2899a14e34eef2c53200e1642254d992e12af6cf942b116f
96 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that point to potentially malicious domains, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, suggests a lure related to cooking chicken, which is then used to direct the user to a URL for further exploitation. No scripts were extracted, but the presence of external URIs and the high confidence score suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=how+long+to+cook+chicken+breast+in+ronco+rotisserie
    • http://usesalle.xyz/adobe_photoshop_cc_training_videos0dum2.pdf
    • https://cdn-cms.f-static.net/uploads/4493602/normal_5fea156de3c8a.pdf
    • https://jotulamopusojo.weebly.com/uploads/1/3/4/4/134465369/doxisomawokekor.pdf
    • http://flathead.us/vakiwudakinilulewuqdupz.pdf
    • https://cdn-cms.f-static.net/uploads/4446925/normal_60541732bb7eb.pdf
    • https://static.s123-cdn-static.com/uploads/4408707/normal_5ff16b12b70d5.pdf
    • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/2834556.pdf
    • https://cdn-cms.f-static.net/uploads/4450148/normal_5fda84b546e2c.pdf
    • http://hookup673.site/pokemon_giratina_strikes_back_legendary_locationsvl6r0.pdf
    • https://poxosopetijonaj.weebly.com/uploads/1/3/1/4/131453527/lexusonutukukam.pdf
    • http://pmaider.com/dirt_devil_endura_max_xl_pet_upright_vacuum_cleaner_ud70186bhygm.pdf
    • http://businesslinecenter.com/juragupubovijipisarowa9.pdf
    • http://verification-help.com/koxijuvoboxaji52ay6.pdf
    • http://losmopaka.site/pafafizogetipixew4hvi.pdf
    • http://item-mask.top/international_cost_of_living_index_by_city9vm60.pdf
    • https://cdn-cms.f-static.net/uploads/4421770/normal_5fe66e1a64927.pdf
    • http://clubstore.info/flame_retardant_plastic_sheeting0a0ne.pdf
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5ff3811fa2fd7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_d4c4e6a7c64a42c39861860c1cfc191a.pdf?index=true
    • https://c3a7a64c-5591-430b-94d7-c2eadfdf3523.filesusr.com/ugd/966478_cf011174901542c5b3bc7509b8e2f013.pdf?index=true
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_648f0ff5d5244d8d8e8f1dc1ac7d9828.pdf?index=true
    • https://50bf384a-eeac-4f26-a262-e2ba1a5e00ba.filesusr.com/ugd/17159d_1700ff7b175f47649694ca1132f3f420.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf3.bin
56503bcecfc5f81d9398617e59a34f14fe7e1e849d38b6b78b96b62aaa4a1530		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF3 5320 bytes
font_01_sfnt_off00010017.bin
71d6eb6dd115d67994c16b8da35038ec4089b0128ac284ac7db1be30bfd4adb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10017 10648 bytes

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