Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf3edab7a41f8191…

MALICIOUS

PDF

54.9 KB Created: 2020-07-27 21:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 037ef96d1d09dddf49ce9dbec073591f SHA-1: 722b55c3868bd82c173a17120f7f4862889f4d93 SHA-256: bf3edab7a41f81914cf30efe181a770996b1922ca4a7994c1eff63252091d358
150 Risk Score

Malware Insights

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

The PDF file contains a lure related to the game Anno 1404 Venice, but the embedded link redirects to a known malicious redirector. The heuristic firings indicate that this PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=anno+1404+venice+starting+guide
    • http://files.smashcakesetc.com/uploads/1/3/1/0/131069899/jatezubokafi-robop.pdf
    • http://files.kingfishersbridge.org/uploads/1/3/1/4/131452880/b42fc815346.pdf
    • http://files.superioroutfitter.com/uploads/1/3/0/8/130873718/remaluzop.pdf
    • http://files.ashleydonnan.com/uploads/1/3/0/8/130814960/lafugegima-pitetal-mopoxakuburevur-muzikuze.pdf
    • http://files.surreycreepcatcher.com/uploads/1/3/1/4/131438193/lubumujokovilajo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/tobeva.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/85773840896.pdf
    • https://cdn.shopify.com/s/files/1/0431/5371/9452/files/jaribu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/10080250559.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/3164762653.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/dukadaloriduxoxamiduk.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/raxokadetavuzalotutozin.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/kaxewekubopajexetoweweno.pdf
    • https://cdn.shopify.com/s/files/1/0436/6827/5353/files/fekunasuzeloxuwironisuwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8093/1733/files/ruzevoxupafoda.pdf
    • https://cdn.shopify.com/s/files/1/0440/8652/6102/files/12437103019.pdf
    • https://cdn.shopify.com/s/files/1/0440/8918/0310/files/36863423117.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/zoloxabosiwete.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/pofokenemagajede.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_off000098ac.bin
9a3547d408f4ade1a192f0e1390d2bfe2b6cce75abbf98a6e5a1dcdae918ca0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x98AC 5288 bytes
font_01_sfnt_off0000aab9.bin
64b943e2bba6755d1d5ad8260fc4fd3b5c06cdeea2e23d085d3d7b85f3884266
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB9 10340 bytes