Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc83672a9fa057aa…

MALICIOUS

PDF

83.7 KB Created: 2021-03-31 02:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: fb721b5e78c2f346849493646d7b2a98 SHA-1: 157f6923c00d9df16bb80f6e54f27aa73e9daed0 SHA-256: cc83672a9fa057aa25a3c44d345cb88b3452583fc8972d75fb0f097c8ee06f9e
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan distribution attempt. It contains a mass of external links, many of which are likely part of a link farm designed to improve SEO for malicious content, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The embedded URLs point to domains that are likely hosting malicious content or phishing pages, such as the 'PSN code generator' lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/wix?keyword=psn+code+generator+no+human+verification+or+survey PDF link annotation
    • https://cdn.sqhk.co/jevamivuvugi/hghjjaZ/todekazoluk.pdfIn PDF document text
    • https://cdn.sqhk.co/pubusudes/aEd53fX/31694446164.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/super_contra_7_nes_game_genie_codes.pdfIn PDF document text
    • http://moxupasasitote.mywebcommunity.org/jardines_colgantes_de_babilonia_historia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479460/normal_6027f73cf3293.pdfIn PDF document text
    • https://cdn.sqhk.co/famogidoje/jhbhbig/super_mario_world_3d_switch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371272/normal_5feea112b45c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_60505fa885ce3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/ryobi_bp42_backpack_blower_spark_plug_location.pdfIn PDF document text
    • https://7fe6b731-3703-45da-bcbe-faf39b4d3392.filesusr.com/ugd/880a7e_176bee6b2ad84c65b0188daaf8f03d34.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/booking._com_contact_information_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/wununekujorijuxevotuguri.pdfIn PDF document text
    • https://9e77dbea-16d6-438e-9859-4a68c5388828.filesusr.com/ugd/3225da_02a48f626e1b46c6a03ae6243837eeda.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/craftsman_5hp_chipper_shredder_carburetor.pdfIn PDF document text
    • https://b9ecad59-ee1c-469f-8402-ddbad3bf215f.filesusr.com/ugd/84dab8_c1c796edad0a4f47b6586b6d0d228eba.pdf?index=trueIn PDF document text
    • https://9505ca4c-dfdc-4941-8fde-ded35496d0c9.filesusr.com/ugd/2097ab_b3229ef29bc847daade88a56a389f257.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/xefosi.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/filol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD5 5448 bytes
SHA-256: 1a57e82a564e07904534314e288d440e719714f089bfc76428226c76cccc6224
font_01_sfnt_off00010e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2E 10792 bytes
SHA-256: b72e092a01d88a09ab5a4ee9e38f0156eaa27659d3ffbedbd8d4a3f906b5110f
font_02_sfnt_off0001331d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1331D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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