Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3c5c447ba1e1bf…

MALICIOUS

PDF

70.2 KB Created: 2020-12-24 23:47:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 99368d940910d869fb4bf5c4b1688c07 SHA-1: 961a36575cb626ef693e937e437fc7c64056c53d SHA-256: cd3c5c447ba1e1bf0e114269de36874088068cfa001a0441d278e1b77ed1f439
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/strik?utm_term=my+land+air+hooksett+nh In PDF document text
    • https://cdn.sqhk.co/feneradebeza/gfjfhdy/50856891123.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/egjVhcy/66540976608.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/liwara/bautismo_de_fuego.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/european_food_information_council.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/app_adblock_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/bmw_connected_drive_canada_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/how_old_is_sandy_cheeks_in_human_years.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/29692760326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83fa74c3-158f-4924-8196-ca87ceac2d8c/kotogeramudatobolujegimi.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/vudutofekusilelitevasowu.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/credit_report_definition_terms.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/the_economist_6_july_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/victoria_2_admit_hegemony.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA80 5084 bytes
SHA-256: 124eabea799c22c6416570a63e3d68b6678a152fd7208b8f781fc570151138a0
font_01_sfnt_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000e733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE733 10588 bytes
SHA-256: 57a14da65f92e46cb3d3c50f5b99ae6c10d73a779a69b3ee3ca06d7ac177b9e9

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