Malicious PDF — malware analysis report

Static analysis result for SHA-256 348f5b30eb70b1a9…

MALICIOUS

PDF

532.4 KB Created: 2020-12-06 16:58:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c04850fa709099fb8d2c4a35a07b11e0 SHA-1: 2142ae2f3081ab2ab5a0d692990b4d6e6f9a5a4b SHA-256: 348f5b30eb70b1a9e7dd0af038a9f70aff5b5d4db01483b1a39e456ff0623079
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://gettraff.ru/strik?utm_term=polansky+review+cards+pdf'. This indicates the document's primary purpose is to lure the user to a potentially malicious external resource. The ML classifier also flagged the PDF as malicious with a high probability. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8563

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gettraff.ru/strik?utm_term=polansky+review+cards+pdf In PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/9927554.pdfIn PDF document text
    • https://wazeketarawowaw.weebly.com/uploads/1/3/4/5/134587567/8356156.pdfIn PDF document text
    • https://voziguwotameba.weebly.com/uploads/1/3/4/3/134345279/visokumevu.pdfIn PDF document text
    • https://kageketiwef.weebly.com/uploads/1/3/4/5/134581137/8274953.pdfIn PDF document text
    • https://fixasamajiwige.weebly.com/uploads/1/3/4/3/134318971/feb92a86eeae0.pdfIn PDF document text
    • https://joleziravakejar.weebly.com/uploads/1/3/4/4/134460301/0f1bb22de0a08.pdfIn PDF document text
    • https://vemugalibi.weebly.com/uploads/1/3/4/4/134484787/jirigogira_lagavodovekab_ropeka.pdfIn PDF document text
    • https://lotunepopufuro.weebly.com/uploads/1/3/4/7/134712327/7016978.pdfIn PDF document text
    • https://nizifaweneli.weebly.com/uploads/1/3/4/5/134589853/6396825.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/muperaxutovajidefimugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f31525-cca2-49c8-b81a-5712440789cb/99915883578.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/local_weather_report_for_sunday.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34f21913-332d-452c-a6d6-22812bc2b6c3/70346983933.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007d81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D81C 3032 bytes
SHA-256: 9319d1841be4d751ecf1a9ad4e1456c5238f9fad33c7702a2a220007e7ad5aa6
font_01_sfnt_off0007e2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2DF 5468 bytes
SHA-256: 651df4d3231bc04d64d9beb668c86482e5167a10787f0ef061468d761210ab3a
font_02_sfnt_off0007f5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5A7 17584 bytes
SHA-256: 36a4a1b1a7f4f7b5d5ff141c861641b8922100b7df67b37f4c3ac864c1960110
font_03_sfnt_off00082a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A64 16244 bytes
SHA-256: 45b66797737222ece4527da4d0f8cda2561991b7539ca28548023cce6959032f

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