Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54f995cfb22491f…

MALICIOUS

PDF

65.9 KB Created: 2020-07-29 15:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f27e226ad72bb53e81768c15405742e SHA-1: f6dd3375180e7c058943091d45b609f13a54a413 SHA-256: d54f995cfb22491f600f5e3d1e32681d893f294025c635d480592452db771c05
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. This URL is designed to lure users into downloading a fake Adobe PDF reader. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. The presence of numerous external links, many hosted on Shopify, suggests a link farm for SEO poisoning or traffic redirection.

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://ttraff.com/pify?keyword=%25D8%25AF%25D8%25A7%25D9%2586%25D9%2584%25D9%2588%25D8%25AF+adobe+pdf+reader+%25D8%25A2%25D8%25AE%25D8%25B1%25DB%258C%25D9%2586+%25D9%2588%25D8%25B1%25DA%2598%25D9%2586
    • http://files.spacecityflyco.com/uploads/1/3/1/4/131437117/77de4c9.pdf
    • http://files.nwaw.com/uploads/1/3/0/7/130776503/vasiwi.pdf
    • http://files.floral-eden.com/uploads/1/3/0/7/130740298/momikela.pdf
    • http://files.nwaw.com/uploads/1/3/0/7/130776503/vasiwi.pd
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/29360571017.pdf
    • https://cdn.shopify.com/s/files/1/0433/0743/4142/files/jofusivexubumufowabaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/lezun.pdf
    • https://cdn.shopify.com/s/files/1/0431/0184/7708/files/65247377982.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/terevelupuwika.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/75938726937.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/55905586397.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53681635306.pdf
    • https://cdn.shopify.com/s/files/1/0434/8477/4552/files/21660374880.pdf
    • https://cdn.shopify.com/s/files/1/0437/7598/3765/files/28615411126.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
stream_008_off0000ca13.bin
c5b78a5bb78019fa37c28b809366a1c89c329489da24279d72c2ae8d465e726c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCA13 25896 bytes
font_00_sfnt_off00007d8d.bin
8405f6ed5498211f18bdf5797e3de79032f17a33a560da12c47c2836b01f8b34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8D 4424 bytes
font_01_sfnt_off00008c8a.bin
fc98a626aa67b2c026aa94b3b2b73bf6f59581a26b976203a1d867fc96244090		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8A 10392 bytes
font_02_sfnt_off0000b051.bin
c14ec4d9002bbec6bc8c3ca71fe221d134030d98e4e61df5daaba0f7d844c06a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB051 17504 bytes

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