Malicious PDF — malware analysis report

Static analysis result for SHA-256 246736e745d30878…

MALICIOUS

PDF

42.7 KB Created: 2020-07-09 11:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38ec55de7ea5a277fce0fdeab64394b3 SHA-1: 7f5807b8cb9718373e3c9fe4c4d7b44fa7ce95e3 SHA-256: 246736e745d30878cd58bc3b4ec99be7bd2ede24c53c16a4295fea85bd081c3f
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=sisterhood+of+traveling+pants+2+plot'. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.com/pify?keyword=sisterhood+of+traveling+pants+2+plot
    • http://files.zootasticpark.com/uploads/1/3/0/7/130775282/7531134.pdf
    • http://files.vagabondetvirtuosa.com/uploads/1/3/2/6/132682819/foroxivixemo.pdf
    • http://files.ckrobotics.com/uploads/1/3/1/6/131606844/muwewivimedejuwalig.pdf
    • http://files.minilivestock.com/uploads/1/3/2/7/132740415/38a223c.pdf
    • http://files.vivocollegemusic.com/uploads/1/3/0/7/130775867/zubujifotetorit.pdf
    • http://files.mariacamera-smith.com/uploads/1/3/1/3/131398131/jilalowamikiniritor.pdf
    • http://files.personalspaceproject.com/uploads/1/3/2/7/132740343/piwepapefa-kavijabojexopi-fuwuwumewa.pdf
    • http://files.vintagehomecharleston.com/uploads/1/3/1/0/131071297/704701.pdf
    • http://files.bethinkcreate.com/uploads/1/3/2/7/132740218/70bd1ff781.pdf
    • https://bijetukexer.files.wordpress.com/2020/06/jasosarafekuwamunovegopon.pdf
    • https://zolukid.files.wordpress.com/2020/06/83438815674.pdf
    • https://gofiteturape494264367.files.wordpress.com/2020/06/xironegixu.pdf
    • https://puwirefot.files.wordpress.com/2020/07/22212089879.pdf
    • https://nofosepeji.files.wordpress.com/2020/06/60635235087.pdf
    • https://genofuligik.files.wordpress.com/2020/06/tuwalonam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xibazukikamemawamiwemin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15843942414.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_off000067d2.bin
a937bda4f5176f7e400bbea938e30bd7b9e17c67348d355e52220ecf1b173400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D2 5384 bytes
font_01_sfnt_off00007a16.bin
437116ddf05165ab2ffe567fd3924d7b69d7f006f75777c8ec902e0972848601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A16 10492 bytes

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