Malicious PDF — malware analysis report

Static analysis result for SHA-256 d140aa03e6c796b5…

MALICIOUS

PDF

48.3 KB Created: 2020-07-26 01:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8373fe1f2008d908695f1fbd129a5fa5 SHA-1: 6b313a967ad340ee087211cadfd6d9556c976779 SHA-256: d140aa03e6c796b57720b1090d28906ad555a669bb15a2ee955ba73bcd78e008
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains text related to reporting phishing to Apple UK, suggesting a phishing lure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be a precursor to delivering a password-protected archive, often used to bypass gateway security.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=report+phishing+to+apple+uk
    • http://files.nestoncc.com/uploads/1/3/1/0/131071315/2ef2f.pdf
    • http://files.fayetteimport.com/uploads/1/3/1/3/131384058/7825158.pdf
    • http://files.classicalmusicphotography.com/uploads/1/3/2/8/132814906/bosijupojomi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5720/8731/files/perevutoxomut.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/sumotezaravagewasaduva.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/44041799249.pdf
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/66396224636.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/sikurifokevufipemepo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/tosiniravujowixukefami.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/fevaxexogupozanubareb.pdf
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/95195301444.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/wuzanexokale.pdf
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/19550055112.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/selumipatanupajib.pdf
    • https://cdn.shopify.com/s/files/1/0430/5528/4378/files/23743734480.pdf
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/nurupixemozi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6125/5073/files/gepudalunononeb.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_off00007f4c.bin
05235b9681db2ed2a91c69776d537d637901690e227aff679780cf349a495162
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4C 5032 bytes
font_01_sfnt_off00009069.bin
c7f2cd5770a3c99635be7720611ec301e9e88b36ebeaf8b99348046bff141431
pdf-font-stream PDF embedded font (sfnt) at offset 0x9069 10304 bytes