Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41f8c25366afe25…

MALICIOUS

PDF

44.8 KB Created: 2020-08-19 13:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d2805916b8a9f699fe21379886a9171 SHA-1: 19e87933197054b98c9ae55127e5bf1cebec08d1 SHA-256: e41f8c25366afe2539093bad18b65baad69f0142dd3b1f06d0a998c548ee1b25
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body text, though partially corrupted, includes a deceptive link related to 'Us open tennis draw sheets' which leads to a malicious redirector. This indicates a phishing or social engineering attack aimed at directing users to potentially harmful content.

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=us+open+tennis+draw+sheets
    • http://files.tecladomusicinstitute.com/uploads/1/3/0/8/130815026/fefikitixitatu_xovixax_sobokufox_zofogokib.pdf
    • http://galuna.lasallecatholic.org/uploads/1/3/0/9/130969488/fuxeketoxosuku-kexof-wanapubuno-bofidilulo.pdf
    • http://pajigebur.semipermanentmakeupacademy.com/uploads/1/3/1/3/131384169/keredeteg.pdf
    • http://zekokif.goldenreiki.co.nz/uploads/1/3/1/4/131438304/dorebevofejinezeg.pdf
    • http://files.jaytotha3.com/uploads/1/3/0/7/130738799/zimofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0456/7450/files/important_days_for_bank_exams.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3755/files/apache_cassandra_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/jovuba.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/fozizupaxunokesonofero.pdf
    • https://cdn.shopify.com/s/files/1/0432/3672/0808/files/98137369393.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/39507590673.pdf
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/cours_administration_systme_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0432/3141/2379/files/information_of_australopithecus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/dafutufe.pdf
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/kinukuwiraxis.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6797/files/puropisik.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/663204156.pdf
    • https://cdn.shopify.com/s/files/1/0438/9991/2344/files/76895447255.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_off0000664e.bin
83909433653614974b9b1811351c9accb91d3eee25a260005f6db2d055a2ad5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x664E 5096 bytes
font_01_sfnt_off000077aa.bin
3cca04e869c135619e2114b03653082ce96f7c2b6b34bac4b8475acbafe17a7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x77AA 15180 bytes