Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd7c967a31daeaf…

MALICIOUS

PDF

69.5 KB Created: 2020-12-01 05:07:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8901e0f93ead1f15c195a7051978f257 SHA-1: 6c78c7daafe59b60b4aaa41d1e79f763664ab9c2 SHA-256: 0cd7c967a31daeaf5bdc0a190dc7c6a20a4bd6df89506899b01d698f8d5c4ac2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/strik?utm_term=the+dark+artifices+spine+art PDF link annotation
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/8412623.pdfIn PDF document text
    • https://joluduloj.weebly.com/uploads/1/3/4/2/134266967/bafc1c.pdfIn PDF document text
    • https://mukoxorokote.weebly.com/uploads/1/3/4/5/134576398/3957883.pdfIn PDF document text
    • https://kagoxikefo.weebly.com/uploads/1/3/4/6/134649289/zajuxuge.pdfIn PDF document text
    • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/2f16d581baf72.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/3bddbc82-1d6e-4ee7-b00b-23b5811d22c5/68522582533.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/24485026345.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/admit_card_dsssb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc296815e8e827d4298a2f8/t/5fc57d6a3c6ccf69f319fe6b/1606778218860/5378258175.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/new_market_leader_elementary_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/2016_acura_mdx_performance_specs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1b1061e25426e1017e2e/1606294290586/mavubimunekuremetixaveko.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/mini_husky_for_sale_in_new_york.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/bahari_za_mashairi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceef4ef3361272aeaa354/1606217461457/88079137293.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuwaterexaf/xaxiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab11be5-86f8-4265-8b62-f35cfce55735/nemuxa.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_off0000b0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0BD 5224 bytes
SHA-256: f8c6c863100df05c649cbc3a5b900b5e313ce2ef53182c5fcb4e7cc4490bc2ae
font_01_sfnt_off0000c277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC277 2636 bytes
SHA-256: f391dd35efaed05b26d39d37aec1eed06e0a81089434ea3fc8ace6e15dc0aa4c
font_02_sfnt_off0000cdb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB0 10956 bytes
SHA-256: c4849c970cffad52a4d54c42760eb3e1b758a3cf7f1b79ff28a195fee248b0d7
font_03_sfnt_off0000f2fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FE 16288 bytes
SHA-256: ec654b92bded9e6e557b311565aa7e6854e46608133b7858caaa001c6b10c411

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