Malicious PDF — malware analysis report

Static analysis result for SHA-256 6013b43ee868f9c9…

MALICIOUS

PDF

79.6 KB Created: 2020-12-20 14:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6cd2da7847946568977e47513ae77e07 SHA-1: b187b8c39a382c63ba3c1744951598d4d7ad19fd SHA-256: 6013b43ee868f9c986c8fc7356de5e19711c4ef33a482df5cd76a2c05f6b921a
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful website. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, contains text related to 'demand function' and application metadata, likely serving as a 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
  • 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=what+is+meant+by+demand+function In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_5f9a65057b430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486778/normal_5fd1f75cf06d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371812/normal_5fbcebfec0709.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426072/normal_5fa41146ef885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5f9ef7db1eb13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5fba094cd725d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_5f8b3c2f2147d.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/xanebavifamopez/jejafewitofasiwurikiv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc35270bdb33045eed1c2ec/t/5fcef1611901dd4d2ec856e5/1607397730359/snake_xenzia_nokia_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc7a3b0a190b16b315946c/t/5fdd105bc13d852dbe0f4f30/1608323164176/38788687703.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5ed52dd96f5918e66b2e/1606377173901/hard_gel_nails_cracking.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28db48787e87989768336/t/5fc4b1fef3de5e49b5f97302/1606726153028/gunixomesonokumenalopa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29f5c5bcb0228a28d70dc/t/5fcba0839708706f399f4ffe/1607180420166/bitcoin_free_btc.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE754 5388 bytes
SHA-256: 3092cfb00376011d8ba8204e4931355b4e85f81f6963298147cf143deae6f3e8
font_01_sfnt_off0000f99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99A 12008 bytes
SHA-256: f596281a03365530486c275c07defd1ab6863c0820adfbc8e10522c2c9016711
font_02_sfnt_off00012282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12282 6084 bytes
SHA-256: fabec606e516cf69f6dec6919936ba93b659fa13295e205095b57fc70665da06

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