Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef0a8fb6f614a20…

MALICIOUS

PDF

50.4 KB Created: 2020-07-28 22:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6427469b31384a257e9fb4b731eb6d24 SHA-1: b243843b067a21a6bb4c631acf959f5c55ac82ab SHA-256: 2ef0a8fb6f614a200fb122e95f7894baebac73e9fa560705c0d574c2989d823f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO LINK FARM'. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=calcium+carbide+on+hydrolysis+forms', which is flagged as a malicious redirector. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a distribution or redirection mechanism. 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.com/pify?keyword=calcium+carbide+on+hydrolysis+forms
    • http://files.yuichiromoriyama.com/uploads/1/3/1/4/131438216/8509d795.pdf
    • http://files.hinxworthandedworthvillagehall.org.uk/uploads/1/3/1/8/131856191/7920216.pdf
    • http://files.msjkeeler.com/uploads/1/3/1/3/131378993/natonigelajokoxav.pdf
    • https://cdn.shopify.com/s/files/1/0437/7686/8504/files/96409674558.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/nolegi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1847/files/20728527266.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/xilukigifukukulipotujeluk.pdf
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/vuniso.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/ferimuka.pdf
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/siwadujir.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/7948437456.pdf
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/28120434425.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/19791174.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/refefabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/78195418542.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/94244328445.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/
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007625.bin
d2077f5d6d5b1d677d9b6d000eb087611a047961d42ceeb980acba3b54af8b85
pdf-font-stream PDF embedded font (sfnt) at offset 0x7625 6492 bytes
font_01_sfnt_off0000865a.bin
93df8578f6725d9e657d4fc255c7893deed7c9457e72349e9d50e1f24ea30ab8
pdf-font-stream PDF embedded font (sfnt) at offset 0x865A 5328 bytes
font_02_sfnt_off00009842.bin
55694bba3de849665d282e11d959d37667e293c4b636c9f92c4e967dcda269fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9842 10404 bytes