Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea5d696e4ba85f1…

MALICIOUS

PDF

83.7 KB Created: 2021-05-22 07:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a6e311867e941f964f4f9500773194de SHA-1: e7fb3630423d55a4b07465265b6de0eefe9b6c97 SHA-256: 4ea5d696e4ba85f147705193547bba357bee1d8a8b4eefd5471c7b6abbce77fd
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 0.9997

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://jumiwimov.ru/strik?utm_term=coloriage+harry+potter+carte+du+maraudeur+a+imprimer PDF link annotation
    • https://gilowowiwojet.weebly.com/uploads/1/3/4/3/134314399/jofujiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375080/normal_6023c7d5e1be7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481275/normal_5fdfb144b7cae.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/pesakabok-fomotu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467322/normal_603a44cfe4d48.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/gowebabuxogiro/war_horse_book_short_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/52071038826.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/schedule_d_2019_tax_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dfaf980-5025-4097-bf4f-35898cd4c1d2/84106349453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c047d09-d832-4dfd-85e6-27d920194e19/what_do_you_call_your_daughter_in_law_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/honda_gc160_pressure_washer_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/sadixebino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b7d481-d0a4-4540-9049-cf814f2f7364/family_counseling_near_me_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/ktm_repair_manual_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/hp_laptop_motherboard_price_in_bangladesh.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/85810520267.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/32618893648.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/excel_vba_array_size_dynamically.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/murray_lawn_mower_air_filter_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597bf4c2-6c28-41fe-970d-1d7ece919baf/tissot_t-touch_ii_replacement_strap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE9 5316 bytes
SHA-256: 674214cb1492af097e03424a790fec18b7e601fc548054e67568f780b304bbf6
font_01_sfnt_off000101d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D5 12636 bytes
SHA-256: 3228fe56d47655823a950c8e9ad92d959e45d13130a07c6f3e68cbfbd113c6ff
font_02_sfnt_off000129a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129A7 16296 bytes
SHA-256: e925e2639c8e65a4343f2be9d5bb5ac3ba32dba6c6f5a1f2da632860c819bb3a

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