Malicious PDF — malware analysis report

Static analysis result for SHA-256 d173e21e295cd886…

MALICIOUS

PDF

37.8 KB Created: 2020-08-09 05:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc2aea9253129912c6537565851b2877 SHA-1: 4eb38f69ece990750aaafd3e4e2acac92882ebe4 SHA-256: d173e21e295cd886794867d3b0f654528f56dc813f34a6e36cf88735272d16ba
128 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. The primary malicious link, 'https://ttraff.com/pify?keyword=bridge+to+ielts+answer+key+pdf', is a known malicious redirector. This suggests the document is designed to lure users to malicious infrastructure by masquerading as a useful resource. The presence of a 'download button' heuristic further supports this social engineering tactic.

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=bridge+to+ielts+answer+key+pdf
    • http://files.goldbergacademy.org/uploads/1/3/0/7/130739227/bemajasirixifiju.pdf
    • http://files.independentbaptistws.com/uploads/1/3/0/7/130776167/bbee56.pdf
    • http://files.jillcarrhilton.com/uploads/1/3/1/4/131453354/1952571.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/65536840915.pdf
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/zifuvufarejufoparevukele.pdf
    • https://cdn.shopify.com/s/files/1/0435/2271/9912/files/interior_design_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0430/3002/0247/files/1936211220.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8524/files/gijosolawuzisifeva.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/fexuduxedomukoziruwudo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/copper_wire_ampacity.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/cath_lab_nurse_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/ufc_gym_new_hyde_park.pdf
    • https://cdn.shopify.com/s/files/1/0439/9028/6494/files/renuxisemusilo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/nagodazozerudenigekulaki.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/
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/cath_lab_nurse_job_

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054f6.bin
39bd68c8895303064f88b4c344580e4cbb96c84b71fd91ef8bf4a1bef9c9631c
pdf-font-stream PDF embedded font (sfnt) at offset 0x54F6 5516 bytes
font_01_sfnt_off000067ee.bin
6b19797016e2226ec88f48119c925bccf92272c131bc5948ff9ab4285f9c9af8
pdf-font-stream PDF embedded font (sfnt) at offset 0x67EE 9980 bytes