Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2417f00f01957f…

MALICIOUS

PDF

71.1 KB Created: 2020-12-08 01:56:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d66149807a43b749968eab94a50f6852 SHA-1: 49be718f6108dfe7e214bebc2eb1a657db6734ea SHA-256: 3a2417f00f01957f64c9cb420976a70a91206ef67eec767e0b1b85c784564f57
154 Risk Score

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://traffine.ru/strik'. This URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a compromised or malicious site. The ML classifier also strongly flagged this PDF as malicious.

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
  • 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.
  • 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://traffine.ru/strik?utm_term=how+to+cite+the+constitution+apa+purdue+owl In PDF document text
    • https://static.s123-cdn-static.com/uploads/4420431/normal_5fcb481002993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5fa3e9fb0c9bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479679/normal_5fb36cd9aa329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393183/normal_5fad654cae682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390097/normal_5fb5d01a13e18.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
    • https://static1.squarespace.com/static/5fc3099a92c50b1a1e857bd1/t/5fc692c04e98326c02f7ce26/1606849217048/learn_javascript_for_web_development.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5506ab8467722f1f11d37/t/5fc914398cb1a632eb19ebf4/1607013433353/civil_war_battlefield_london_ky.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/51219858330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f789993-a34b-4c18-bc5b-5f0c783b8d29/75214121105.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/spanish_question_words_worksheet_printable.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6d2f9aa0dc1643a2d70b0/t/5fce21e6eb18547f4bace549/1607344616414/11677129275.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f9ac5bcb0228a282ded2/t/5fc5ba1c61e25426e1fe4225/1606793757434/dyson_dc33_multifloor_bagless_upright_vacuum_bed_bath_and_beyond.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/448e6791-5cc6-49b6-847a-0a13e9812bf1/vespula_witcher_3.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB95 5096 bytes
SHA-256: 0e2e95a555b2538aa963d52a57b43c804fc2448fa449acab5bfe67b569b30df5
font_01_sfnt_off0000dce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE1 10792 bytes
SHA-256: aed1df1ec3c50b87e03bcd2e5646ef098a59819fd271660973dc28ff43355509
font_02_sfnt_off0001018c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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