Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c609c6b80005c9c…

MALICIOUS

PDF

45.9 KB Created: 2020-08-01 15:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17efded36b0a08b5dbacf774a321c959 SHA-1: 298737b916c3412305838c1ef38ab58180f5f277 SHA-256: 0c609c6b80005c9cf35c3c55ed26b930e2886e9c0788f82dc53d6e14a57458bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=lavender+town+piano', which is flagged as malicious. The presence of numerous Shopify links suggests an attempt to disguise malicious activity within a large link farm, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=lavender+town+piano
    • http://files.siakas.com/uploads/1/3/1/8/131856009/0d7fbd20959.pdf
    • http://files.magistrasolomon.org/uploads/1/3/1/0/131070230/xevakagoboma.pdf
    • http://files.pannamariatexas.net/uploads/1/3/2/6/132683140/2a9ae1b.pdf
    • http://files.beyondshipsart.com/uploads/1/3/1/4/131453919/ludedaxibuduramu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/8774/9529/files/90823753042.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/dofudubizofibojumo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/12233069859.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8735/files/jugif.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/79021247770.pdf
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/51112067481.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/36991109949.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8274/files/sevowo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/59338919156.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/72870289652.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/3943202117.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c2.bin
34b4e587fad9ec27f6c6c2dc738134a6b9ee842c6561b3f85ea92085d2916aaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C2 4624 bytes
font_01_sfnt_off00007194.bin
39d43a282864814c316d9df4d11aca1e26570d38dc03b41a5d42ed3fbb17d983		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7194 13836 bytes
font_02_sfnt_off00009ced.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CED 4324 bytes

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