Malicious PDF — malware analysis report

Static analysis result for SHA-256 00dd333f02227665…

MALICIOUS

PDF

45.7 KB Created: 2020-08-20 08:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6442511187550c5bb6003f38bd53f77 SHA-1: 7de699654b32d159c13fc939261bdba889d4c371 SHA-256: 00dd333f02227665b58218a3bbcd7671fe56df29812c849d782371184e88d25b
154 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 used to host further malicious content or phishing pages. The document also contains a large number of links to other PDFs hosted on Shopify, potentially as part of a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. The ML classifier strongly indicated maliciousness.

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=btu+to+kw+conversion+table+pdf
    • http://lovoneref.creativefringe.net/uploads/1/3/0/8/130874493/rotadewuxozimitu.pdf
    • http://zonamepup.jocelynphotoblogs.co.uk/uploads/1/3/1/4/131483255/2256723.pdf
    • http://kilago.equusmedendi.com/uploads/1/3/0/9/130969858/sikawap.pdf
    • http://javijomad.socialhotspot.org/uploads/1/3/1/4/131407005/186d610eaa196d5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8517/6736/files/festival_cervantino_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/94333624098.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zurutadodusabexefiba.pdf
    • https://cdn.shopify.com/s/files/1/0436/0660/5987/files/kiwewev.pdf
    • https://cdn.shopify.com/s/files/1/0433/3581/1231/files/vorowukojalonezipowaju.pdf
    • https://cdn.shopify.com/s/files/1/0448/1653/1617/files/doduxelevisowigogew.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/remove_duplicates_from_sorted_array_java.pdf
    • https://cdn.shopify.com/s/files/1/0438/3794/8061/files/cee_lo_game.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/jalubexajidetofavisab.pdf
    • https://cdn.shopify.com/s/files/1/0429/1805/1996/files/add_element_to_array_java.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/vafegewexozukulabufese.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/59977046819.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f58.bin
9c67950ef79149545f629494d2922a015723a6cdf6b104744107519ae49143b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 5556 bytes
font_01_sfnt_off00007264.bin
3b98f140a4f50e82bf9ac2d40159ea3fa13c72f816024525131e2639c05d1b31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7264 10120 bytes
font_02_sfnt_off00009536.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9536 16060 bytes

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