Malicious PDF — malware analysis report

Static analysis result for SHA-256 21b3e32d1817beed…

MALICIOUS

PDF

42.0 KB Created: 2020-08-21 13:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3efa957c589f6ea9f45e988aec9dffee SHA-1: ff085891eedff36fba48e4f0173356da2e3c5ec1 SHA-256: 21b3e32d1817beed36c8dc98498c00ad1634681fdd02d4daa5c47ff4123e51d4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure related to employment registration, directing users to a URL hosted on ttraff.com, which is flagged as a malicious redirector. The document also contains a large number of embedded links, many pointing to shopify.com, but the primary malicious indicator is the ttraff.com redirector. The file's purpose appears to be to redirect users to potentially malicious content via a social engineering pretext.

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=employment+card+online+registration+form
    • http://fekogosid.kasiaclarke.com/uploads/1/3/1/3/131381882/b53d298b.pdf
    • http://files.obsidiansolarcenter.com/uploads/1/3/2/6/132680905/7805359.pdf
    • https://cdn.shopify.com/s/files/1/0429/6658/1407/files/a1_drawing_sheet_size_in_cm.pdf
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/nixixileropexupalugope.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/73639807644.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/74570513455.pdf
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/cannapower_musik_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/33233617495.pdf
    • https://cdn.shopify.com/s/files/1/0435/8569/9997/files/how_to_facebook_videos_without_application.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/969573846.pdf
    • https://cdn.shopify.com/s/files/1/0447/6777/2821/files/analytical_psychology_its_theory_and_practice.pdf
    • https://cdn.shopify.com/s/files/1/0431/6951/3632/files/zikotewaxaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/serum_protein_electrophoresis_interpretation.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_off00006577.bin
340b3c38143393dbe86d7531e3b26a4d593ce838b5c440664d40852700d3c8cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6577 5532 bytes
font_01_sfnt_off00007839.bin
ec1c1d879e7fdec26729af66e84dd8c389f965034776d651bbd69f15b6265c72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7839 10248 bytes

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