Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3cce711ca7fa7b4…

MALICIOUS

PDF

43.0 KB Created: 2020-08-04 08:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71e9dd56f60d287575fec9a8c9d8448c SHA-1: 93a111e627a1309a9b7df94bbdc6df910b6b022d SHA-256: c3cce711ca7fa7b46da64e124f9a98dba35c395bc0a87a9849cb73a3d86f6b0e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent. 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.cc/pify?keyword=analytical+chemistry+methods+and+applications+pdf
    • http://files.adamdoesdisney.com/uploads/1/3/0/9/130969153/xironi_bulowubiveteruf_nazoduwixufa.pdf
    • http://files.hashtagyana.com/uploads/1/3/1/6/131636956/1783302.pdf
    • http://files.theaterinthewoodsvt.com/uploads/1/3/1/0/131070011/dafc684.pdf
    • https://cdn.shopify.com/s/files/1/0434/7704/1304/files/16968774177.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/pezajumukupu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/majagurisowiwirilexov.pdf
    • https://cdn.shopify.com/s/files/1/0433/4983/5930/files/17230807446.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/97104566868.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/nozeti.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/miligewimulidokevegodaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/buteniwifepegi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/47005577453.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/61129664954.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/xunivivud.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_off0000680f.bin
9ee7bd80e8a92f2186aa8294bd10e99831e7341d5d5d7840d9eaef838cbb4874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680F 5484 bytes
font_01_sfnt_off00007a97.bin
3d9afd579974351a2e78fe5da853d9818b37985cfd728272ee4fc3f147a2760d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A97 10668 bytes

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