Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5defbabd70116a8…

MALICIOUS

PDF

45.8 KB Created: 2020-08-23 23:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62d41bbcfa2a527ff7c31800c29a4ec0 SHA-1: 9ecc7b43d7beb98de9039d9eaf44f3c43e155aa2 SHA-256: e5defbabd70116a840086fc0e47f368fdbcc475d6a7183c0f486c0186b9a45de
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to external PDFs hosted on various domains. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=ultrasound+guided+carpal+tunnel+release+recovery+time'. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. 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.com/pify?keyword=ultrasound+guided+carpal+tunnel+release+recovery+time
    • http://files.norikiyohonda.com/uploads/1/3/1/4/131407299/lezokezuduvujisoxap.pdf
    • http://files.stephanieryckman.com/uploads/1/3/0/9/130969053/pawor.pdf
    • http://dagov.greenteamforfifeanddrum.com/uploads/1/3/1/4/131437604/5373d.pdf
    • http://defoju.lizbethgiftsnthings.com/uploads/1/3/0/7/130776031/levomeden.pdf
    • http://files.zorniklab.org/uploads/1/3/1/3/131383480/lefoka-zugowewa-faladijabibovin-noxapajuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/sap_abap_basics.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/jexugadipuliguf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5407/9904/files/atos_2018_integrated_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/17028204967.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9600/files/94527064847.pdf
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/51241241895.pdf
    • https://cdn.shopify.com/s/files/1/0437/4193/7818/files/understanding_management_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/8547/0623/files/jomewebirazebutesevukube.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/98261140795.pdf
    • https://cdn.shopify.com/s/files/1/0440/0100/1630/files/lojepuxosapexipiwuxelor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/vewel.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/70770968425.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_off00007449.bin
61de28c313693e31b081cd5719fb80651d10b5a5df53c6c5a09f1209657076e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7449 5544 bytes
font_01_sfnt_off00008711.bin
90562d4f821de9fdb2c9836eef2dbf04fd34ffde834a26983f5b3d388460801f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8711 10140 bytes