Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be5e16ecd1cf8a4…

MALICIOUS

PDF

67.3 KB Created: 2021-01-08 06:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c50417e686aa9a515e7364bd34bfabe SHA-1: 6e55a43a92a2206a5243e9d8a6d3c3a2be469b1e SHA-256: 1be5e16ecd1cf8a465f280a52df175d31051857902ba724c521f5b77b455b6fe
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect to an external URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary IOC is the redirector URL, which is likely used to host a phishing page or download further malicious content.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/123?utm_term=nova+lab+answer+key PDF link annotation
    • https://s3.amazonaws.com/wifozuxeku/32290511781.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxeneson/chiHNgP/stickman_rope_hero_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/guletema/9hdA6ia/jijiwimewo.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/gomaro.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/2hcjejc/hangout_word_meaning_in_bengali.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/dIieRjg/btc_recharge_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/kanereneb/hejC6hg/stretch_diy_slime_simulator_2019_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/dozumapufa/bxzahjN/london_stock_exchange_free_courses.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/5bfab8bc-5f39-4896-a6f4-bd0e275e47d5/super_mario_advance_romsmania.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f91a8af-96d9-442a-beb0-6842ea74bc8d/zedd_house_david_dobrik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e148b05-d49f-4b9a-8f8b-a8d81cbca071/dd_srd_brown_bear.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebb50430-c9f2-4f03-8cdd-1c1a0e6a8dfd/82758908592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9bb7cee-09bc-48b9-9cf9-96a772423c70/gegodesotasejisaxikuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d6634d5-ba6e-4930-b7e4-56425e0c979e/ncaa_football_championship_trophy_replica.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 2

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_off0000c0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0DF 3360 bytes
SHA-256: b7dfed2b6263c8437b0c2beb59fd86e1ce92c2fd422c71948afaced02129f81c
font_01_sfnt_off0000cccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCD 5104 bytes
SHA-256: 9b5b9d3143804e573d7c585a7a32c84eed64bd2df3d2de74b0570a429f26c149
font_02_sfnt_off0000de54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE54 10004 bytes
SHA-256: f030e96c7ab73b6ba81d0b0bf975933043ca65138ebf6e4ccd6840c8174024dc

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