Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6fc88bf4f9da8c…

MALICIOUS

PDF

37.8 KB Created: 2020-08-20 10:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 883e24d16ce78d26057389ee8443efc0 SHA-1: 1c4b3f8eaad2528ba9ead41c24397bf83fd5b586 SHA-256: 1c6fc88bf4f9da8cee96ef2e3e2abba0eb027a749f3c1c390181fa13132d1072
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.com/pify?keyword=chordates+mcqs+with+answers'. This redirector is likely used to funnel victims to malicious content. 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=chordates+mcqs+with+answers
    • http://zimamu.northsoundtu.org/uploads/1/3/0/7/130775350/vegovasopeno.pdf
    • http://zumizuxan.maplephoenix.com/uploads/1/3/0/8/130814237/db4d6a.pdf
    • http://files.staites-honey.com/uploads/1/3/1/4/131406288/tanizojovuworin_telesurozuwa_fojege.pdf
    • http://xefodagid.elizafleetwood.com/uploads/1/3/0/9/130969060/754b665e5e.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/reportage_deschamps_complement_d_enquete.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7047/files/letter_a_worksheets_for_toddlers.pdf
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/benivubupogosikunuvuxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/14123814925.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1261/files/l_encyclopdie_du_chocolat.pdf
    • https://cdn.shopify.com/s/files/1/0428/6113/3990/files/kunivukomefadizog.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/97108884403.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/mb_to_kb.pdf
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/43129365710.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/salesefoxamirajaf.pdf
    • https://cdn.shopify.com/s/files/1/0446/7628/4569/files/another_vs_other.pdf
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/80171376488.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/38594433944.pdf
    • https://cdn.shopify.com/s/files/1/0437/8496/2199/files/92582987225.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_off0000566a.bin
5ed2e5cac71c095b83fb3a46b78591ad5935fbc70ce9be21016ead89d97ba9cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x566A 5272 bytes
font_01_sfnt_off0000683d.bin
d8f87f34455e1178a72ca193a0b18bb8b6a393aba3ef028157c359ab536b25c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 10028 bytes