Malicious PDF — malware analysis report

Static analysis result for SHA-256 b58cab156e795248…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 02:27:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85221b34b021e2382bf899cab42acfe7 SHA-1: e0f9f71ed0d35ef6ee2d8412bd86cd78996c06ed SHA-256: b58cab156e795248552f13d51521cb2cf3f1ab0191012d76d225809a93a84b0d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link is designed to lure users into clicking on it by presenting itself as job interview questions. The link ultimately redirects to malicious infrastructure, indicating a phishing or social engineering attack.

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.ru/pify?keyword=communications+officer+job+interview+questions+and+answers
    • http://files.cupcakesalacarte.co.uk/uploads/1/3/1/6/131606165/desokodom.pdf
    • http://files.alannaandaliciaegan.com/uploads/1/3/1/4/131438240/f5816ee490.pdf
    • http://tosag.allisonevansphd.com/uploads/1/3/0/8/130874598/3295023.pdf
    • https://cdn.shopify.com/s/files/1/0440/1253/5958/files/tds_challan_form_281.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3625/files/96617634045.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/meteorology_today_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/24774991212.pdf
    • https://cdn.shopify.com/s/files/1/0432/2898/7547/files/rulesoliwurelusisarafu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5032/files/16050843752.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/61721900682.pdf
    • https://cdn.shopify.com/s/files/1/0450/9846/7480/files/asma_gpc_rapida.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_off00005e67.bin
2f0c55be2171f07e287919c43b2f0f9d15a1700c70ab2b1274f7f85a75bd8637		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E67 5532 bytes
font_01_sfnt_off0000712a.bin
e798b37fbe79401b5d7f37f26b68a8f20adde19ddbc9d2e13807f1104950ac49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712A 10616 bytes

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