Malicious PDF — malware analysis report

Static analysis result for SHA-256 844ec79b7f0e16b7…

MALICIOUS

PDF

70.4 KB Created: 2021-03-22 15:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08eae415a79bebbfd6ac2783b5c8796a SHA-1: 6086f02eb1c8579a084b1fe62f900bdacba2caa5 SHA-256: 844ec79b7f0e16b7f302a4c52a38421d8f9c52ceb497e1d6f9ccad1b757b9ddf
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by both heuristics and ClamAV as malicious. The ML classifier also flagged it with high confidence. The document body, though heavily obfuscated, suggests a lure related to a search query, likely intended to direct the user to the malicious URL for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/wix?keyword=polar+cave+mashpee+opening
    • http://xelamoxadavas.mywebcommunity.org/23608073204.pdf
    • http://fukuzowi.sportsontheweb.net/60347953236.pdf
    • http://prod-fruit.space/1850730405126aea.pdf
    • https://cdn-cms.f-static.net/uploads/4422906/normal_5fd8b6fad915a.pdf
    • http://itawegan.fun/free_printable_halloween_coloring_sheetsyal5q.pdf
    • http://pet-guru.shop/34680600361plvnf.pdf
    • http://luwogexejel.getenjoyment.net/28676892996.pdf
    • https://static.s123-cdn-static.com/uploads/4388833/normal_5ffda11a16c5a.pdf
    • http://kmplitka.shop/worksheets_for_making_inferences_and_drawing_conclusionszdpgo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gagotaniwipure/johnson_6hp_outboard_motor_prices.pdf
    • https://s3.amazonaws.com/diwitapezu/fobosaj.pdf
    • https://uploads.strikinglycdn.com/files/86198321-8e32-4da3-8315-3a989d7507dd/kasolepavikupax.pdf
    • https://uploads.strikinglycdn.com/files/2d2f930f-5b47-49f6-bb2f-583f3b972347/38112635191.pdf
    • https://s3.amazonaws.com/bezutu/62040346962.pdf
    • https://s3.amazonaws.com/kudufigunabi/mumonoto.pdf
    • https://s3.amazonaws.com/sizabo/lezoritijotinakit.pdf
    • https://s3.amazonaws.com/rolefosiju/mikevadanuxuwugawedurepap.pdf
    • https://uploads.strikinglycdn.com/files/9a1dac8b-53bb-4986-90d7-8ee3ccc26375/60268581393.pdf
    • http://nozozuwovore.atwebpages.com/harry_potter_and_the_goblet_of_fire_teaser_trailer.pdf
    • https://s3.amazonaws.com/metakibeme/oracion_al_espiritu_santo_para_sanacion_y_liberacion.pdf
    • https://s3.amazonaws.com/jivuxo/69598863354.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5c6.bin
8108e4e9cc97be746efd6d04e877cfb0dce94742481aaaeff1969d336ce376f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C6 5408 bytes
font_01_sfnt_off0000e80c.bin
027e4715518b4c0dbc14ceda7c40a6999901893f0628df0351dd5ea6dc652f1b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE80C 10728 bytes