Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d13c94331be38cb…

MALICIOUS

PDF

41.4 KB Created: 2020-09-28 17:35:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 030189fc149db325986d65464417c5bb SHA-1: 95ad4b250fd961bf9d2dddd1ac5440661c52dfc0 SHA-256: 9d13c94331be38cbbe8566e8adbdcc65c8bcf061731889cd71087994437faf13
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The embedded URLs, such as 'https://gettraff.ru/mozel?keyword=assets+vs+liabilities+pdf', are likely part of a campaign to lure users to malicious sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a content-based lure designed to drive traffic to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/mozel?keyword=assets+vs+liabilities+pdf
    • http://files.demoneira.com/uploads/1/3/1/3/131380213/gifitozapufazuvilid.pdf
    • http://files.aztardis.com/uploads/1/3/0/7/130776016/29bf223013422.pdf
    • http://kapinip.monasedrak.com/uploads/1/3/1/8/131872055/sajef_kusepi_zifixubipixe_retiwi.pdf
    • http://files.fireriver.tv/uploads/1/3/1/4/131437017/fedogemedopin.pdf
    • http://files.fmbcec.com/uploads/1/3/0/7/130739510/vowavemij-zesegut.pdf
    • https://site-1036920.mozfiles.com/files/1036920/4441284818.pdf
    • https://site-1036939.mozfiles.com/files/1036939/88715954448.pdf
    • https://site-1037260.mozfiles.com/files/1037260/nolugosunugu.pdf
    • https://site-1037160.mozfiles.com/files/1037160/xivexexifopiwigi.pdf
    • https://site-1037061.mozfiles.com/files/1037061/48042626876.pdf
    • https://cdn.shopify.com/s/files/1/0440/7659/7413/files/85243688135.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/kosifulemofisedufavefasex.pdf
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006572.bin
bbc148e99d566c1049356dffd6d60f8c245fc59935f98547d1326cfebaa09e0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 5128 bytes
font_01_sfnt_off000076fd.bin
3dfe8ddf7305f7907ebeb5a3909c78243187d84ad9ebaa7eda26cae8d1ded9ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FD 10112 bytes

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