Malicious PDF — malware analysis report

Static analysis result for SHA-256 8317944e4c8c81e7…

MALICIOUS

PDF

70.0 KB Created: 2021-03-27 16:39:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 304f8290b182b957d377ddec0ac2d504 SHA-1: a87238fd13c5899246fdb026bd62a5e6fa19b1c2 SHA-256: 8317944e4c8c81e717a0c27ba7574f1a487936a1df4d93a3ce6b681313a4f8fb
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user. The document body, though heavily obfuscated, references 'animal shelter games unblocked', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/wix?keyword=animal+shelter+games+unblocked
    • http://instasavephoto.com/aircare_humidifier_parts_listmo3i3.pdf
    • https://wimugedi.weebly.com/uploads/1/3/4/7/134725841/0ae4424a.pdf
    • https://nogetutiru.weebly.com/uploads/1/3/4/7/134711470/runapu.pdf
    • https://fupelesanu.weebly.com/uploads/1/3/1/6/131606305/79ace40821.pdf
    • http://9gusevshop.space/putopipudomezonomeletefobw8ds.pdf
    • https://dafufiwe.weebly.com/uploads/1/3/4/3/134368649/wujuwukufevadow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/28ff539e-ae1a-4bf5-9f1d-82cb9a5a4f65/80075953547.pdf
    • http://xokeraje.rf.gd/84378693638.pdf
    • http://wulimazef.epizy.com/odjfs_child_care_licensing_forms.pdf
    • https://s3.amazonaws.com/vixuwogetiv/19484238699.pdf
    • https://s3.amazonaws.com/sudevejerifu/vehicle_log_book_template_canada.pdf
    • http://xodemomawul.epizy.com/nezukebemolimosafuzuwepin.pdf
    • https://uploads.strikinglycdn.com/files/68915d56-a02a-4546-828b-f9ec5026c8af/bifoxigame.pdf
    • https://uploads.strikinglycdn.com/files/10fa8b16-be47-4d69-a776-f4d77864077f/python_learning_app_for_free.pdf
    • http://sarovagovoz.rf.gd/is_nikon_d5200_a_good_camera.pdf
    • http://sofejovizifufin.epizy.com/infant_baptism_catholic_answers.pdf
    • https://s3.amazonaws.com/zukogi/94643128780.pdf
    • https://s3.amazonaws.com/tibanepoxilibud/rearrange_sentences_worksheet_for_class_6.pdf
    • http://keporumutiwem.epizy.com/3397240876.pdf
    • http://nitetuxal.epizy.com/pdf_ecology_and_environment_by_pd_sharma.pdf
    • https://uploads.strikinglycdn.com/files/bcf3dbc5-b56b-451a-9999-0ea1265257b8/miluzegex.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_off0000d61d.bin
f25aa5e294d8ccbb17def8f5f74017242a98592d5dd4d28a8503c0f190e09b1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD61D 5544 bytes
font_01_sfnt_off0000e8c1.bin
a73a9c4f4029b3e0da218ceeeb26dc0048a4440edc3fc370551f79088504080f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C1 9884 bytes