Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba676bda65e4761c…

MALICIOUS

PDF

50.3 KB Created: 2020-08-05 09:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ab702e76896a3678685b45b2c003e2c SHA-1: 26912ab23de81b708765586471c3127ab20e4df6 SHA-256: ba676bda65e4761c014977a7dd1d7ae90994e57b7cbdbcfe182af33b2593f1e3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=architectural+drawing+details+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which are benign but likely serve to mask the malicious redirector. The primary intent appears to be directing the user to malicious infrastructure via a deceptive link.

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.cc/pify?keyword=architectural+drawing+details+pdf
    • http://files.awolimited.com/uploads/1/3/1/4/131438353/sibotozarasu-fusapurof-bonavexoneba.pdf
    • http://files.nollcompliance.com/uploads/1/3/1/8/131872054/mugobubijaxunaxememo.pdf
    • http://files.fiongunn.org/uploads/1/3/1/3/131398598/0050519.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/scope_of_biochemistry_in_agriculture.pdf
    • https://cdn.shopify.com/s/files/1/0432/5192/5155/files/4843007075.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/bananas_and_pajamas.pdf
    • https://cdn.shopify.com/s/files/1/0435/1072/6815/files/wegiwozexelowizifima.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93236297381.pdf
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/miwizunikatepetaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/laxozuzimewexurulib.pdf
    • https://cdn.shopify.com/s/files/1/0434/5570/9351/files/em_tag_html.pdf
    • https://cdn.shopify.com/s/files/1/0429/1356/2787/files/wukabotuxoxigadawevasena.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/norogekukisuvudep.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/temolibokivimabuso.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0875/files/51852347956.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/lakunebibimadupetubanogix.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_off0000853c.bin
2da247f0ab7407a7937af4572095ee3a3b18442eecdd7ecfbf48cc87e5d54a4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x853C 5496 bytes
font_01_sfnt_off000097fd.bin
8f47d5e00943e593240e7959936d896303024804257f254f38cd298c13217efc
pdf-font-stream PDF embedded font (sfnt) at offset 0x97FD 10412 bytes