Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac90a5029385796…

MALICIOUS

PDF

67.7 KB Created: 2021-01-29 20:22:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c5c6a1e9eea7df44f1c5ed71be3b2142 SHA-1: 904659da9c26bfadb0d749f1469156db4a10b742 SHA-256: 2ac90a5029385796f20cfe17bac7c0b0110df0d192631b8640deb2d72db5d9e8
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 high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the presence of embedded URIs and the overall detection suggest the document is designed to exploit users through deceptive content, likely related to COVID-19 information, to lead them to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/123?utm_term=flatwoods+park+covid PDF link annotation
    • https://cdn.sqhk.co/rugugojeba/kWhggdB/91976339034.pdfIn PDF document text
    • http://kawlites.online/wilutifozamenarevegeju3jyi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376601/normal_6001b01d15f10.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/ciciaNq/wetub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374532/normal_5fc6ff1f3ff5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487663/normal_5fdb13a65a6a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_5fd7ebb5b314a.pdfIn PDF document text
    • http://podcard2020.site/65283460922cdbcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408875/normal_5fe2e819a9acc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_60111f237ea6b.pdfIn PDF document text
    • http://copyright-supporthelp.com/red_bump_on_skin_hot_to_touchmigl2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_5fd5f555961e7.pdfIn PDF document text
    • http://znasila.ru/17618184984xdh5t.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/agcig8C/woxixifigeb.pdfIn PDF document text
    • https://cdn.sqhk.co/lexijunibul/egj5if2/xotipuruxinixokakegiguniw.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/if0ggfZ/hidden_agenda_ps4_review_ign.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/7gfeDjc/boraduxuxuko.pdfIn PDF document text
    • https://cdn.sqhk.co/muresogus/XFj4lF9/jefewodadowamiwexijunam.pdfIn PDF document text
    • https://cdn.sqhk.co/lakekomum/zgfYggJ/street_basketball-_world_league_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/solaxutom/jEMRASz/18875974465.pdfIn PDF document text
    • https://cdn.sqhk.co/xanapaje/iggjtge/7089040979.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1BB 4804 bytes
SHA-256: 291e9d96541603a2e6a7abb697e006ed8113e83664a38660a84a2c7758a059b9
font_01_sfnt_off0000d239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD239 9744 bytes
SHA-256: 1b311c78fcdcbd32323c8d55a711f75d3a6ef68d1b51d5de9389ba9500f04e84
font_02_sfnt_off0000f39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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