Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5f4126070fc7e3…

MALICIOUS

PDF

44.8 KB Created: 2020-08-06 06:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89d1f2f93cac21a30869226f95cb939c SHA-1: ef61895d86623382f01eb2b55e22fc1aa28e0b25 SHA-256: 3c5f4126070fc7e364e91d8a885c8bc07f8f45628ecb8ef466254f4f35e9cb91
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at `https://ttraff.cc/pify?keyword=anomia+social+anemia+estatal+pdf`. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.cc/pify?keyword=anomia+social+anemia+estatal+pdf
    • http://files.staleyrealestate.com/uploads/1/3/0/7/130738970/fotofe.pdf
    • http://files.apsimarin.com/uploads/1/3/1/6/131637385/5a0f42adcc3ee.pdf
    • http://files.efarsystem.com/uploads/1/3/0/7/130775282/5212420.pdf
    • https://cdn.shopify.com/s/files/1/0435/0777/7700/files/97722847110.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6896/files/86928561977.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/hey_angel_one_direction_leaked.pdf
    • https://cdn.shopify.com/s/files/1/0428/5402/3327/files/beravijil.pdf
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/20412497550.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4934/files/37816775756.pdf
    • https://cdn.shopify.com/s/files/1/0435/2845/4304/files/microsoft_certification_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/bitugesotujutovuru.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/cuestionario_ser_bachiller_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/sojara.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/gebamominomafodizala.pdf
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/93712563324.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/kubufolit.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_off00007109.bin
0781431c44a33566125750ca220f542b9097c2aba534b3198305ad1051cb044e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7109 5196 bytes
font_01_sfnt_off000082a8.bin
5e5a84fafebd15bcc1c53888684d22aafe6aa666eccc245b81be7c07c58be5be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A8 10724 bytes

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