Malicious PDF — malware analysis report

Static analysis result for SHA-256 e46e993920f73643…

MALICIOUS

PDF

79.8 KB Created: 2021-03-07 05:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b885bcb142d1fa8fbead8d9884032538 SHA-1: 278fa524494c08a0e73ef67451831ccc350871e8 SHA-256: e46e993920f73643a959fb6461d86afceafe174237fb0e90c7c366a881b73a5e
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, indicating a link farm designed for SEO manipulation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=wabisuke+is+op PDF link annotation
    • https://tiseworadew.weebly.com/uploads/1/3/5/3/135317060/713fdd.pdfIn PDF document text
    • https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/zolipasibe.pdfIn PDF document text
    • https://kenaveduku.weebly.com/uploads/1/3/0/8/130813649/wipujutegareniturow.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/QjiIHyn/money_spent_by_lobbyists.pdfIn PDF document text
    • https://dofipoxadule.weebly.com/uploads/1/3/4/3/134314370/9946926.pdfIn PDF document text
    • https://cdn.sqhk.co/wutalididow/hZhfxib/kimorixoz.pdfIn PDF document text
    • https://suwesinorilofev.weebly.com/uploads/1/3/4/0/134096988/3017730.pdfIn PDF document text
    • https://cdn.sqhk.co/xugosovemi/jdghQih/rotator_cuff_strengthening_exercises_band.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9fba912-7d6b-4458-863d-761650d36916/how_did_you_get_here_tiktok.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/sorun.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/89261145401.pdfIn PDF document text
    • https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_ee7fdfa4f74a493b9843c269a5722178.pdf?index=trueIn PDF document text
    • https://34570882-574e-4d25-8c0e-d8b9b6c2967f.filesusr.com/ugd/cb2bed_476b66ad45e74199969b5b09f2a4441d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/albert_einstein_short_biography.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/how_to_log_into_arris_tm1602a.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/97496745360.pdfIn PDF document text
    • https://d6d3a1c5-32ce-46e9-ae92-c5b8d84d65d9.filesusr.com/ugd/a3b54b_3b70efd3744944a7ba469fc7bd649c73.pdf?index=trueIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_76450f13d28043fb97fbf568ef5dd406.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cb69743-1521-4180-b2d0-f5b2996c1661/interview_with_the_vampire_armand_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3bf869d-5280-4d87-bc18-246882ee1a49/why_is_my_hp_printer_printing_blurry_text.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/734fdea9-6b4d-4c78-bb1b-fae3af166dbc/dujinugadakupa.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_off0000f031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF031 3580 bytes
SHA-256: 53d279dbc0b8965b10cf2cd3b6462066acbeba2c6c0d9dd5a48bf42902a9cbc5
font_01_sfnt_off0000fd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD04 4900 bytes
SHA-256: ef8a9d20e047d7fa089afdb810f54f34f55abfb3e4617cbf030c47f18df4ef13
font_02_sfnt_off00010dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD0 10132 bytes
SHA-256: b4337899265ec9c2b2860a4b3dc4981e1657f6f5f5b898709017fc7da26a2172

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