Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48c68005c5347f2…

MALICIOUS

PDF

62.8 KB Created: 2020-08-23 20:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d9a29ebd80235960b2fc0077752fc3e SHA-1: dd2dfa78382357b5ca6b53307f339fbf5fac71fc SHA-256: d48c68005c5347f24593cdb3a120962c02937af002f5ff1d0367eaf86f91e647
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, limiting the ability to determine the exact second-stage payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=jomoj+10+bangla+natok++2018
    • http://zewevif.booksandspoons.com/uploads/1/3/2/6/132695471/rupukur.pdf
    • http://files.bellissimaconsignmentonline.com/uploads/1/3/0/8/130873804/vasisitexa-nozeguziva-timifu.pdf
    • http://files.elizabethkelleylaw.com/uploads/1/3/0/8/130814017/7829054.pdf
    • http://files.covertscales.com/uploads/1/3/1/3/131379443/9097a19942b.pdf
    • http://takit.calvin-olsen.com/uploads/1/3/1/6/131606739/fefura.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/wepuvulurilum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7760/7324/files/33442932060.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4870/files/xulage.pdf
    • https://cdn.shopify.com/s/files/1/0434/3696/6055/files/pesuguwamabipadinazugol.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/vetugunemizasurefibamaxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/multivariable_calculus_jon_rogawski.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/comfortably_numb_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0431/1662/6081/files/arquitectura_bizantina.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/dobidufigafobipegu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7423/files/tawosuboko.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/welugawofalabewuwi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b2e.bin
365d63e4245f9ce46a4b844fda1c2212bf56e54429ed5ce70105097a4fca0d63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2E 5520 bytes
font_01_sfnt_off00007dee.bin
a075905c83762c7d0cbf0e43ab61ca7863f23cd2d821d63dd0518027821da449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEE 12152 bytes
font_02_sfnt_off0000a4dd.bin
4a0ab91a3bfb643d07683244c9600d63e3f1d472f639c89052c726e85f9a74de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DD 15340 bytes
font_03_sfnt_off0000d4c2.bin
a7d0a776a13e86692c86c2d6183cb02ba4558a8a8e10f2fe4b60b7e3d6b93aa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C2 16792 bytes

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