Malicious PDF — malware analysis report

Static analysis result for SHA-256 13527b1a1ba4bc1f…

MALICIOUS

PDF

73.0 KB Created: 2021-03-14 05:32:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9328708b1f2cbff8b1cef24cfb085cb5 SHA-1: 51cdd301d4ad2afd8faa892d8b7a65a6a7f4884d SHA-256: 13527b1a1ba4bc1fb98fdc99268f395f68d442897fde3a6fad4c055d1cb38a02
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. The document body, though heavily obfuscated, contains keywords related to real estate, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/wix?keyword=tinsley+real+estate+inc+greenville+sc
    • https://static.s123-cdn-static.com/uploads/4365620/normal_5ffebff2cd67c.pdf
    • https://xesinuvukuwufo.weebly.com/uploads/1/3/0/7/130776104/2e77f9d7b98865.pdf
    • https://cdn.sqhk.co/jutafegobexe/ifnUibr/spirit_halloween_animatronics_2019.pdf
    • http://interbank.link/5449064707388jcv.pdf
    • http://pugezesiw.mygamesonline.org/harry_potter_house_trunk_book_set.pdf
    • http://pifadopagel.scienceontheweb.net/antinomia_significado.pdf
    • https://jawifeguviweti.weebly.com/uploads/1/3/2/3/132302916/vibimepabifo.pdf
    • https://cdn-cms.f-static.net/uploads/4475729/normal_600d6bb5b0e4d.pdf
    • https://cdn-cms.f-static.net/uploads/4370768/normal_60406d656a29d.pdf
    • https://cdn.sqhk.co/libegavezu/ghBibjf/endless_alleluia_piano_sheet_music_free.pdf
    • http://bamirajewenexo.medianewsonline.com/3d_in_powerpoint.pdf
    • http://paxezimusosesa.scienceontheweb.net/letter_of_recommendation_for_assistant_principal.pdf
    • http://itravelimpressions.com/62183016486jahu1.pdf
    • http://doweryklkq.space/2nd_grade_common_core_math_review_packet09wq2.pdf
    • https://cdn-cms.f-static.net/uploads/4369516/normal_6048a33e545a6.pdf
    • https://gitinegu.weebly.com/uploads/1/3/4/6/134648864/wozem-teruwugovajogaw.pdf
    • http://sluzhba1.net/32544389986531zw.pdf
    • http://instapodarok365.site/86744390619izc5d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4d5.bin
be95b7489d87effc98a2354c8f87c3f3cf1599e78c046d8dd262274eff98a9e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D5 4756 bytes
font_01_sfnt_off0000e506.bin
5411e91bc7cd04e056bdac2454233fd227228f0cea042b1c936dfbc6ff301e29
pdf-font-stream PDF embedded font (sfnt) at offset 0xE506 10388 bytes
font_02_sfnt_off0001089f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x1089F 4324 bytes