Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbfb5c00003e081b…

MALICIOUS

PDF

48.2 KB Created: 2020-08-10 03:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60a6d900388b5a3af323d2300d0bd200 SHA-1: e8f0fc34570b8836fd0f4c0195f8a56fb8deeea2 SHA-256: cbfb5c00003e081bc0ccf1c661ad432479220817169ecce3b5e0138b8167e996
120 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains text suggesting it is a PDF about 'protein synthesis in eukaryotes', likely a lure. The presence of multiple external PDF links, many hosted on Shopify, indicates a link farm strategy. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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=protein+synthesis+in+eukaryotes+pdf
    • http://files.fredswildflowers.com/uploads/1/3/1/4/131438899/fozija.pdf
    • http://files.artworkmq.com/uploads/1/3/1/8/131856919/5901473.pdf
    • http://files.greenhousewivesbathco.com/uploads/1/3/2/7/132712129/tapakotid_rotizig_ladul_kuvefatimozik.pdf
    • http://tuvarav.kimseiterdogagility.com/uploads/1/3/0/7/130775162/xokebake_fukekoru.pdf
    • http://files.nathanieleyamamoto.com/uploads/1/3/1/4/131483307/bogidomezugefi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/juwaseladapibiseka.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/mibubuvenatutavanimotar.pdf
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/9117457234.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/sewawuzijeredufodolo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/11721311760.pdf
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/77310675086.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10588857949.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/resume_file_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/xakerawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/moweruxokiliwem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdf
    • https://cdn.shopify.com/s/files/1/0435/7976/8995/files/dunomarukojofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/30315435899.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_off00007e7c.bin
47e4298087c0684f9f922e48ab8c03dc279d91eb3a645110323300023a27dce9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7C 5264 bytes
font_01_sfnt_off00009067.bin
1eaa1457b392dc92dfb6c077c507551d111567c907dfd2ec7c933e6686d6056f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9067 10208 bytes