Malicious PDF — malware analysis report

Static analysis result for SHA-256 97dd647a704d0fdc…

MALICIOUS

PDF

39.2 KB Created: 2020-08-19 18:37:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05dbe289e921e998605b097d04023d30 SHA-1: 9e491f239fceefa447f64b12fa826a2e0c49f23a SHA-256: 97dd647a704d0fdc8e742fb325a9cb288a24b9cd4647631b139a969b92f48924
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lure the user to a malicious site. The document body, though heavily obfuscated, contains text related to an 'elapsed time worksheet' and the malicious URL, suggesting a social engineering pretext. The presence of numerous external links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=elapsed+time+worksheet+third+grade
    • http://files.lakeeffectclarinetquartet.com/uploads/1/3/1/1/131164473/supovipuk.pdf
    • http://tumifone.poodlepets.com/uploads/1/3/0/7/130775565/namojiluzefiv.pdf
    • http://files.mysweatshops.com/uploads/1/3/2/6/132696351/jomete.pdf
    • https://cdn.shopify.com/s/files/1/0436/4809/0272/files/todomezekej.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/xajikupuzikojevokokik.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/79395014995.pdf
    • https://cdn.shopify.com/s/files/1/0433/7781/9802/files/api_gateway_cloudformation.pdf
    • https://cdn.shopify.com/s/files/1/0438/5135/0166/files/21607540371.pdf
    • https://cdn.shopify.com/s/files/1/0438/6222/9157/files/download_african_map.pdf
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/75581649116.pdf
    • https://cdn.shopify.com/s/files/1/0434/8916/5478/files/84678730532.pdf
    • https://cdn.shopify.com/s/files/1/0428/9013/3663/files/bhagavad_gita_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/profiting_from_technological_innovation.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_off00005bf9.bin
99b962118c0f29d8877688b837d96067706ea3e352ceba2e484248aa94f5db24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF9 5484 bytes
font_01_sfnt_off00006e93.bin
7cc474475117d3f3bbb3375994744392fe1117a3ae4f5dc5840af9061f65aedb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E93 9796 bytes

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