Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7a74c399ca3f94…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 04:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5489ac505c12440cd10fc735a71364eb SHA-1: 296ef844712d1520d6a5b9d3cc4037763a627836 SHA-256: ca7a74c399ca3f944bd8fbeea8c4ad7a86afbf152bf9e6a3290e75ab9a8c1dfa
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, likely as part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.cc/pify?keyword=crying+woman+meme+template`. The document body text, though heavily obfuscated, contains references to "Crying woman meme template" and the malicious redirector URL, suggesting a lure to drive traffic to malicious infrastructure.

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.cc/pify?keyword=crying+woman+meme+template
    • http://files.pharmaciecocagne.ca/uploads/1/3/1/3/131384777/tovinolo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/tibuvoporonapata.pdf
    • https://cdn.shopify.com/s/files/1/0439/3448/2587/files/83606032040.pdf
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/70520161936.pdf
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/musepogowiguniwelebog.pdf
    • https://cdn.shopify.com/s/files/1/0428/8059/8172/files/36723305925.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/zefudirukafa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/lewepagafipusowef.pdf
    • https://cdn.shopify.com/s/files/1/0438/2228/4960/files/dusewafurusikunigibalada.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/48921887963.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_off00006066.bin
c2eec32059ac2dc28eb81217d61550feac8ca5271f66f754d3272e874256ad92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6066 5060 bytes
font_01_sfnt_off00007194.bin
da4e3969804f674fefcd7a44069eda8bf7534aa2a31d329ecef0598d73448e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7194 10196 bytes

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