Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3943600235440a4…

MALICIOUS

PDF

40.3 KB Created: 2020-08-18 13:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9258bc3e4c2d93ebdc33b8bc2144ac4 SHA-1: ccbc5ff3923b51126d85d8b05dabc20dcea6fadf SHA-256: c3943600235440a46d71269f02b1cc46841e8f2e52231787e81a8333683a1e0b
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented with a keyword related to downloading software. This indicates a phishing or scam attempt to trick users into visiting malicious infrastructure. No scripts were extracted from this sample.

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.com/pify?keyword=canon+camera+connect+apk+for+macbook+pro
    • http://files.thecheckupapp.com/uploads/1/3/2/7/132740278/5f0ed1.pdf
    • http://files.pilatesante.com/uploads/1/3/1/3/131383942/konokuvivomekasod.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/sukunofunoverakumizabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/schema_complementi_analisi_logica.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/kukogemuteronizi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/75840388029.pdf
    • https://cdn.shopify.com/s/files/1/0428/1093/3414/files/40099098853.pdf
    • https://cdn.shopify.com/s/files/1/0431/6181/3152/files/koxokotudofefiwoxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/48380228581.pdf
    • https://cdn.shopify.com/s/files/1/0429/6065/0393/files/brutal_black_dragon_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/33494764294.pdf
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/29055571591.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/bokevodozoritu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/6079562627.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_off0000603e.bin
527bfe8ac9d3879cb5026eb70a67c1ad9174f3509f6b51245a240e42ab3737cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603E 5060 bytes
font_01_sfnt_off00007161.bin
f84ee766234a7a814fa1d9f4204c2d648c94dc315b69ce3bc1eb2a12d9133da3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7161 10196 bytes

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