Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2aaafedb61d33c…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 07:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0629297525a554e7458f6efe1a3a940f SHA-1: b5c3c67c2a0015f09908276743b8609af09272e4 SHA-256: cd2aaafedb61d33c8f56ce8a550eafb9a8d1973c4f6aec82a01c02b491143c6c
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a link farm or redirection scheme. The presence of a 'download button' heuristic further supports the lure to click the malicious link. The primary attack pattern involves redirecting the user to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pdf+bridge+to+terabithia
    • http://files.unityrecordingstudio.com/uploads/1/3/1/6/131606491/445ecb4.pdf
    • http://files.jpzproducts.com/uploads/1/3/0/7/130738716/4169334.pdf
    • http://files.glaciercitygardener.com/uploads/1/3/0/8/130874246/luvem.pdf
    • https://cdn.shopify.com/s/files/1/0433/5363/7018/files/81478273021.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/wateku.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/pedivemo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/38865423678.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/93039446747.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/magic_bullett_express.pdf
    • https://cdn.shopify.com/s/files/1/0436/7882/6661/files/lawepirudifubabezara.pdf
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/64827764944.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/calculus_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/77379415585.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/zutaku.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_off00006144.bin
259870fc593e0ded62501d0223f6a37d8f05a7c5b7a3e68bdf365fc7528e0732		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 5100 bytes
font_01_sfnt_off00007297.bin
cc936ded8e483f1a1835c5ff328ca43dc671f45acff69e667949ee019034a2ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7297 9852 bytes

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