Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dc8201a53d492e7…

MALICIOUS

PDF

71.5 KB Created: 2021-04-04 22:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c16c7cfd909e2c00cf3bf0d193c1c9df SHA-1: 72c1d4c651199f999473c969ab7807a706a17780 SHA-256: 2dc8201a53d492e74354926071fd26cfe4ab550277a1c3eb4744c47973cea13f
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 0.9998

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://botokaw.ru/wix?keyword=rosario+a+la+virgen+de+fatima+youtube PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384037/normal_5fe0ab199fb5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476567/normal_5fe4869763508.pdfIn PDF document text
    • https://kepubaxolawava.weebly.com/uploads/1/3/4/7/134703856/8659352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412758/normal_601f660350251.pdfIn PDF document text
    • https://berisojelo.weebly.com/uploads/1/3/0/8/130874511/3973777.pdfIn PDF document text
    • https://divetuguwopad.weebly.com/uploads/1/3/0/7/130739619/kupawudezegem.pdfIn PDF document text
    • https://zutafagufagupak.weebly.com/uploads/1/3/4/2/134235067/kofipukun_sugezelez_lixora.pdfIn PDF document text
    • https://gekiwudev.weebly.com/uploads/1/3/4/7/134769606/nafezipojuj_bagobabejuz_rezam.pdfIn PDF document text
    • https://lufuneliza.weebly.com/uploads/1/3/2/6/132682735/fesapipepexet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470211/normal_5ff4a0a8bb2d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e61d1ca-d311-4797-a0dc-74ac12240fbc/gm_diet_plan_chart_for_7_days.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/2124347889.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/derimepifadimepi.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/whatsapp_for_pc_terbaru_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/blessed_be_the_god_and_father.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3622bc-6424-48aa-b43d-c4539129fe8a/marla_maples_today_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/whirlpool_oven_door_parts_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/nuposar.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_off0000d900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD900 5536 bytes
SHA-256: a03ec171f9bddc0a71ecb59fc685496e99a642b87d76eb324eb27d261b33d86f
font_01_sfnt_off0000ebd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD0 10940 bytes
SHA-256: b6c7f238f6fcab3b7b1c58f3ac1c94e0f8552f42cc29ffbdcb795df05581f0fd

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