Malicious PDF — malware analysis report

Static analysis result for SHA-256 40bc912181d391b0…

MALICIOUS

PDF

87.3 KB Created: 2021-03-23 03:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e876a847f1a13f6bfe3690fa91849001 SHA-1: 259db62dc9e58e5a6482667e0685b34b513ea4a6 SHA-256: 40bc912181d391b0bae7bab68f6530e2dffdf02c9d0e9fc02e56010dc0c0e5f2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF_URI heuristic suggests the document is designed to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://resalured.ru/wix?keyword=happy+atoms+ionic+and+covalent+bonding+worksheet+answers
    • http://my-favshope.online/night_of_the_iguana_film_castrjddk.pdf
    • http://rawiduti.medianewsonline.com/easy_keto_recipes.pdf
    • http://fitnesspack.net/46040963990v3yjx.pdf
    • http://sportplays.ru/vajiguniwapeziwazibod8sld.pdf
    • https://cdn.sqhk.co/fexiseme/bBnthhL/15789926857.pdf
    • http://giwewigipebi.medianewsonline.com/31224021019.pdf
    • https://cdn.sqhk.co/xajamenujo/j6Okyir/87294663752.pdf
    • http://zuxuvikewi.sportsontheweb.net/how_to_convert_word_document_to_on_mac.pdf
    • https://cdn.sqhk.co/sifilefu/Eheifho/44565347252.pdf
    • https://cdn.sqhk.co/gitaligido/flgdwje/xoninaripobefoduk.pdf
    • http://jepisafidezegun.scienceontheweb.net/29963744695.pdf
    • https://cdn.sqhk.co/busumodofu/hMC2d89/ccna_routing_and_switching_arabic.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pisik/49191192655.pdf
    • https://s3.amazonaws.com/takurugilij/19803370145.pdf
    • https://s3.amazonaws.com/wunojipu/tifadib.pdf
    • https://s3.amazonaws.com/lulelepese/38139238266.pdf
    • https://s3.amazonaws.com/fapaga/lulaluravilapajefebatuz.pdf
    • https://s3.amazonaws.com/legobegutulo/sebomuduwamevimobuligug.pdf
    • https://s3.amazonaws.com/xeropizuwe/chairman_job_description.pdf
    • https://s3.amazonaws.com/waduzirader/zakugufojogej.pdf
    • https://s3.amazonaws.com/daraniwekamidir/giorno_piano_music_sheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe7d.bin
799f073dc9f9da89066a970bc2ed17064f0312ecaf081f211c18ae41b0389116
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7D 5904 bytes
font_01_sfnt_off00011280.bin
eafa85a9d75e4e79c97a46d3e462fa4dfe08d2cc3675de1692f837846b79a9cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x11280 10860 bytes
font_02_sfnt_off000137d8.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x137D8 16204 bytes