Malicious PDF — malware analysis report

Static analysis result for SHA-256 658970461e1ace7f…

MALICIOUS

PDF

60.5 KB Created: 2020-08-28 16:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dd4394eccec46989d1514137033df7b SHA-1: 3db83dd9eeefa0adc7a0974e4d1dc1bb9d163480 SHA-256: 658970461e1ace7f1ae1ca99cc64fb88035f2851ffc4b4c7d472dfe1e2bb2ae1
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=magnus+gift+eso+location'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination.

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.cc/pify?keyword=magnus+gift+eso+location
    • http://xizivol.camarillochamber.org/uploads/1/3/0/7/130775126/dolawamazupufowibudu.pdf
    • http://files.kashmirweavers.org/uploads/1/3/2/6/132681863/kinorinuzafoko-tumesegako-zaleforajoteji.pdf
    • http://wotod.judiculbertson.net/uploads/1/3/0/7/130775971/roletogukagijibog.pdf
    • http://files.emmarainewalker.com/uploads/1/3/1/8/131859261/vukinevedorivivip.pdf
    • http://files.marinerswelfare.com/uploads/1/3/0/8/130813991/gupul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/duputirubukukedaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/57259275130.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2485/files/6546181265.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/maduj.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/proform_elliptical_trainer_7._0_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/89727301006.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/75679414970.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/ruxezexoja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/atoning_dragoon_kain.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/nuzawebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/96318403054.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/wizawubijavanixagolomo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/29522276734.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000adf2.bin
2369b3cefee6581778adc8cda09da2d4f1910f1c618b54c0be9eab5e2f3da96b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADF2 4960 bytes
font_01_sfnt_off0000beee.bin
0818b4b2bb2137b207ad966f21f3c20c76cdd5a7aba7ec61aac8ff7fc5a19367		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEEE 11612 bytes

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