Malicious PDF — malware analysis report

Static analysis result for SHA-256 c317894d686b0a9c…

MALICIOUS

PDF

47.0 KB Created: 2020-08-24 00:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 812d1032879b64107e98425212b99733 SHA-1: bbbc3ac52d4a43d2fac9053b17d15d2191ded46d SHA-256: c317894d686b0a9ca841b48ae68ca0f3c526d362daebce30a4989f2ecc41453b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, found in the document body, redirects to a known malicious URL. This suggests a social engineering attack aimed at tricking users into visiting malicious sites under the guise of downloading games.

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.ru/pify?keyword=play+pc+games+on+your+android+free
    • http://files.lhsmediacenter.com/uploads/1/3/0/7/130775983/dulaluz-kifadelujal.pdf
    • http://files.jburgettrentals.com/uploads/1/3/0/7/130775958/seditar_togemabug.pdf
    • http://files.jennyscreativeedge.com/uploads/1/3/2/7/132712006/7e8c93191164a.pdf
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/wuwuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/2639712524.pdf
    • https://cdn.shopify.com/s/files/1/0430/5282/6773/files/20630990590.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/risekumomivedopela.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/kijixilamaxub.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/vosegamaxubinasifabevax.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/78665879184.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/arabic_comprehension_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/wavebuniduxibelekonoguf.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/99834447262.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0839/files/88708444057.pdf
    • https://cdn.shopify.com/s/files/1/0438/4001/2450/files/validity_formal_logic_definition.pdf
    • https://cdn.shopify.com/s/files/1/0436/5415/2342/files/tigofepo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/33390371715.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_off000078cc.bin
4a450e9dafcae49f9b620465bc8f3d39363db645349bc790f20d92c702c122ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CC 5576 bytes
font_01_sfnt_off00008bb5.bin
4f5607a57db8cce177b64dea96d269c980f550d63e3ad6e456b7f3c50a873b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB5 10328 bytes

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