Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eec866f63f82d03…

MALICIOUS

PDF

47.9 KB Created: 2020-07-29 11:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f25bec26f40ff4246b8b0fce685030e SHA-1: 001231a1f1f0d116887df1bd0eab0182a1470d58 SHA-256: 9eec866f63f82d03e0ea62f358eee101aac4befb235ae3e1917de413f33f518b
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be luring the user to a malicious external site.

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=authentic+arabian+horse+names+pdf
    • http://files.littleladyo.com/uploads/1/3/0/9/130969004/furopigolijur.pdf
    • http://files.plantmorenatives.com/uploads/1/3/0/7/130775200/gusolupelodoj.pdf
    • http://files.pureperspectives.com/uploads/1/3/1/6/131606284/dazezafaz_fesaniruletonan.pdf
    • http://files.airbrushingwood.com/uploads/1/3/0/7/130776407/jeruzaresewur-tufifile-vofejo-wobomajul.pdf
    • http://files.airbrushingwood.com/uploads/1/3/0/7/130776407
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/58156915894.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/66536459735.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6426/files/megenaluxubunami.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/92532195407.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/kujasuveromopovalibalixez.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/fuxor.pdf
    • https://cdn.shopify.com/s/files/1/0433/8135/8759/files/xunoves.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/63070355828.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/lejowaduk.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/daviduwodot.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/37985931556.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/juwefovifevajexibat.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_off000077a4.bin
778f066ad8772f86896efe031437f5f1cb69ac65414b1a102716ce0b3e8aa602
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A4 5372 bytes
font_01_sfnt_off000089a7.bin
2f5a089f433ca8c885819caaa683285955b8bd17cd09c8a01306a711c655040b
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 13084 bytes