Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fdb9ad2e3e3eb48…

MALICIOUS

PDF

73.4 KB Created: 2021-03-29 06:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bbb655b8a64ec421dbde1ff5ca3100e7 SHA-1: ef20f75cd63fdcc5600ab1f6fad4e6e8594f1036 SHA-256: 2fdb9ad2e3e3eb48ad710c775dc0532b776f49e94935856ddd14f29296cad130
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/123?utm_term=cesur+yeni+d%25C3%25BCnya+pdf+yandex PDF link annotation
    • https://kagesurofuzesik.weebly.com/uploads/1/3/5/3/135303772/b7bad2a86f.pdfIn PDF document text
    • https://diwoneguni.weebly.com/uploads/1/3/1/4/131407083/pegumap.pdfIn PDF document text
    • https://cdn.sqhk.co/mezadisedud/cZNidVD/10979709465.pdfIn PDF document text
    • https://xifofenanupov.weebly.com/uploads/1/3/4/8/134857182/f0cf176f4302ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476566/normal_5fcd3114669bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500911/normal_5ff8f13730f1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_604b46bc1f33a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370269/normal_601fee2677a9b.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/6hdigjb/calligraphy_fonts_free_marathi.pdfIn PDF document text
    • https://jogelobob.weebly.com/uploads/1/3/5/9/135961552/f93a46c2.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/vutame/kexazamebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa5407b-fcf5-45bc-8284-4bf9894c8b4a/utopia_for_realists_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23cb30ff-8ee3-475b-8467-666a77962df6/ar15_upper_receiver_blueprint.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/cheetah_keyboard_application.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/distech_controls_thermostat_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/do_you_need_a_pre_op_for_cataract_surgery.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/pukosogape.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/how_much_is_a_brand_new_galaxy_s9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7845e736-e650-47fb-bc4c-e1dbaa088798/pituzanutogud.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/cisco_ap_1140_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f052f7ff-cfee-4d3b-9552-1c10872fe3c9/google_maps_street_view_change_year_iphone.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF83 5200 bytes
SHA-256: fb74b9d230f28cdff29f67de25b9a2038ca03dd8ff19615b5445ea9763f6d706
font_01_sfnt_off0000f116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF116 11852 bytes
SHA-256: 2d4ee8d6931080e866184edadb68dd9c685e2c2925b45b769a5f035df36395a7

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