Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d1615e59bb4d234…

MALICIOUS

PDF

50.3 KB Created: 2020-08-05 03:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fe5616debb9bbd68df7a0b076f251f3 SHA-1: bda4eef4f558f233efdadf4dcf097573669559d1 SHA-256: 8d1615e59bb4d23467fd99c2f490f92900000bbd00cb216f17d761e681d04981
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify-hosted PDFs, suggesting an SEO link farm or content manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious objective. The document body itself is heavily obfuscated and contains what appears to be the book title 'Dietrich bonhoeffer the cost of discipleship pdf' alongside tool information, further supporting the lure of a legitimate document to mask malicious redirection.

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=dietrich+bonhoeffer+the+cost+of+discipleship+pdf
    • http://files.corrieknapp.com/uploads/1/3/2/6/132696104/7844203.pdf
    • http://files.strongerquicker.com/uploads/1/3/0/9/130969077/lubiteweje.pdf
    • http://files.tadaa.com.au/uploads/1/3/0/7/130776728/xusalev-fegokofujo.pdf
    • http://files.tnsbenin.org/uploads/1/3/1/4/131414743/mojuw.pdf
    • http://files.highschoolphilosophy.org/uploads/1/3/0/8/130814192/cbabd0c90c50e1c.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/walagonuzomok.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/durevesudubetobexeb.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/21159705467.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/golezipujewutagaroraxiso.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/37383492735.pdf
    • https://cdn.shopify.com/s/files/1/0429/1336/6182/files/17367791070.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/vuwopuzutufuxopizapol.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/atmosfera_geografia.pdf
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/mewevukovugarulexid.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9973/files/patogenesis_aterosklerosis.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/disineruzejedogeruge.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/fosutavumapexa.pdf
    • https://cdn.shopify.com/s/files/1/0450/9263/4789/files/canon_lide_220_scanner_manual.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_off000087ae.bin
c80301bb31bfc0acb13548eb5290d60817097108a1b40de07560f35287f000bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x87AE 5172 bytes
font_01_sfnt_off0000993c.bin
d65d558938dbe060704c55f2404993be81fc3162e38a1dfb384f87f41a9386a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x993C 10156 bytes