Malicious PDF — malware analysis report

Static analysis result for SHA-256 7693e112c5217ad0…

MALICIOUS

PDF

73.8 KB Created: 2020-11-17 06:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0c5dec373d6753cfbe5b18cf341ed893 SHA-1: 9cf962f78136b0f656277ef016f21a14b9f35667 SHA-256: 7693e112c5217ad008e0163c3223a0a5e9eef3a63738bb0a5b0ab8aec6b0f697
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=drivers+samsung+ml-2165w+descargar PDF link annotation
    • https://vebeviwikime.weebly.com/uploads/1/3/4/3/134317270/2587427.pdfIn PDF document text
    • https://fokakumunimu.weebly.com/uploads/1/3/4/2/134266115/7656960.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/dalava/the_hitchhiker_guide_to_the_galaxy_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/18444949915.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/70568829138.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/life_cycle_of_a_chicken_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/wadefir.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/sao_ep_11_eng_dub.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/sefeduporezelasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109f102f-19b9-425f-9e11-8ed2fd643d3c/13674473271.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/ruwuke.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/regafusigatifuniwusirugox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b20189-bd2c-4072-ae5e-a35f2187d022/luneboxupedugitubidewub.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_off0000c064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC064 5904 bytes
SHA-256: bf179a30cc5c026f5650b8512ebd21bff69c7bb7f2061189c691108d5cf11d96
font_01_sfnt_off0000d48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48F 2116 bytes
SHA-256: 89454d8ece1be00d2333aac76955f46ed17c4d141322e635bf27f42efb43e54e
font_02_sfnt_off0000de5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5B 11660 bytes
SHA-256: 0b45a4ab09ca768292a8dfb817e38c5bba694eefdea436972a8e5dd40dfdcc8e
font_03_sfnt_off0001049a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1049A 16180 bytes
SHA-256: cdd4c34d6a2e93bc97a4547e09a2aa72e84d72c45b2f27a7ba448a8a265679b2

Open this report in the interactive analyzer, or submit your own file for analysis.