Malicious PDF — malware analysis report

Static analysis result for SHA-256 08489e4e83b8332e…

MALICIOUS

PDF

81.4 KB Created: 2020-12-24 00:32:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c81c63e3559fcf3213b0d0385a0365cd SHA-1: e8402f387d3bfbb8be4a0de19f8ca80825024c76 SHA-256: 08489e4e83b8332e8032bbd5f24b2c32259ee46db189db778b7a3cbe72bffd25
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://traffset.ru/strik?utm_term=hitman%2527+s+bodyguard+full+movie+download+moviescounter PDF link annotation
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wijigomofiweb_lotitosede_jukis_dirum.pdfIn PDF document text
    • https://gafalevomunu.weebly.com/uploads/1/3/4/2/134235362/28b0266.pdfIn PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/499196.pdfIn PDF document text
    • https://makaxifosezopuv.weebly.com/uploads/1/3/4/5/134511124/likes-xilarafax-desebivuv.pdfIn PDF document text
    • https://cdn.sqhk.co/padekopa/6cgf8pc/mebiwefiworupe.pdfIn PDF document text
    • https://lexawuvake.weebly.com/uploads/1/3/4/6/134610488/sudepabuwekasizakimo.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/sefipa/wetowufowixekib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8799cbf5-7230-4b8a-9702-33d16e69269b/clean_coder.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/call_center_metrics_key_performance_indicators.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/supimumezo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/jatapekafewatovibugij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e0fa11-32de-42dd-a999-2639a0e2c458/face2face_intermediate_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/fodiburesebifixiwosabura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e48683-8ff3-454b-9ce8-23c07398e810/ninja_best_gameplay.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/2._2._1_digging_karel_answers.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC93 6744 bytes
SHA-256: 048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4
font_01_sfnt_off0000ed47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED47 3072 bytes
SHA-256: 5373cce9e378fe722d43ee8cf089aeb12fb84a36783b0e1cf1bbfe80247a957a
font_02_sfnt_off0000f83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83C 5732 bytes
SHA-256: bf629bef13004f24145481282057df8b99e1297b6355a342cbc4b1bd4400fd9b
font_03_sfnt_off00010bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBF 12936 bytes
SHA-256: 2c4f8c36f897fb8168170011b3ab01a25b2a149313a1003b21c375725da657ec

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