Malicious PDF — malware analysis report

Static analysis result for SHA-256 d42e12b19ee16781…

MALICIOUS

PDF

77.2 KB Created: 2021-04-04 21:24:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 30d7ec133cfc091ed639d29da2bb153b SHA-1: 4102448423c0bba6b0822cbb7219c14f7c86fcbd SHA-256: d42e12b19ee167816b035f0801f86e8f42bc91df88f16ad2b15563b582ad57ef
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious URL, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/aws?utm_term=bill+of+exchange+accounting+entries+pdf PDF link annotation
    • https://cdn.sqhk.co/devisojop/ifXhfMD/gmail_inbox_message.pdfIn PDF document text
    • https://cdn.sqhk.co/jekenilegefe/aWgejhz/dead_cells_xbox_one_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/hixGZhf/gelavasawosadu.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/gfhggf2/vegan_spelt_sandwich_bread_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/if4AhbL/32932453453.pdfIn PDF document text
    • http://world-wild-shop.com/29020583257iuwqk.pdfIn PDF document text
    • http://biomanix.best/59324089184jgz3w.pdfIn PDF document text
    • https://cdn.sqhk.co/xatijafuwami/NwGDjb2/19224038950.pdfIn PDF document text
    • http://winoraama.fun/align_trex_500_esps0ra1.pdfIn PDF document text
    • https://cdn.sqhk.co/jifexekezeli/cghibgf/acrobat_reader_professional_9._0_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wofetewa/b6rcG9E/doomsday_zombie_film.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/cdxidjj/motocross_meltdown_apk.pdfIn PDF document text
    • http://shopyou.online/how_to_change_an_ipod_nano_battery80q6i.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/3a1570ad-ab83-40d4-8881-4ead71129883/introduction_to_probability_and_statistics_milton_and_arnold_4th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/wasafaledadep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2104c5e1-8608-44f7-836c-a76f3788f58f/16577250153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ac07141-a13c-44b4-8970-2aa39a30f510/pusokusebaresipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b25b02f-0936-484f-90f2-e32e947e8a08/78522196280.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/28429390304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38c058c9-0be8-4ddf-bae8-a62f25de3787/little_house_on_the_prairie_season_1_episode_5_full_episode.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDA 5532 bytes
SHA-256: 980189068c88fd68fb6962dcb8b187ae090e2b3299e6e1c9a678cc4f64893df9
font_01_sfnt_off000102b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B2 10720 bytes
SHA-256: d249ca89b45c44ddde349c4f70052bbab0ae350fc0ff4234028c9f187e6cfb7c

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