Malicious PDF — malware analysis report

Static analysis result for SHA-256 818fcf3489daecee…

MALICIOUS

PDF

34.8 KB Created: 2020-08-16 18:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 540634f55c654d489f5f04016932bb54 SHA-1: 74e8e51b8a9e2642783454f7fff5ad11aecccda1 SHA-256: 818fcf3489daecee0dbfe15524ebfcda24ca62dffb90f164310611bf08c2503a
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to Shopify domains, but one critical link redirects to `ttraff.com`, known malicious infrastructure. The document body contains a call-to-action phrase, suggesting a lure to click the malicious link. The primary attack pattern involves redirecting the user to a malicious site, likely for further exploitation or malware delivery.

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=brownman+revival+album+free
    • http://files.perspectate.com/uploads/1/3/1/3/131384171/ruwabupojazewu-zaxemazus-zutoxin-vemutiwevabuxu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/converter_to_word_app_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/10108046873.pdf
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/10265994173.pdf
    • https://cdn.shopify.com/s/files/1/0431/7993/3862/files/bekedi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6019/8557/files/zokakibutogexag.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/british_council_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0436/3393/4496/files/pixumujogad.pdf
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/riduzuximifesofavuxutoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9449/7698/files/the_scarlet_letter_study_guide.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_off00004abd.bin
89aff65463f1527c560bc4f2bfc831bd95584fc9cc31e41359f95dd40ff56d62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ABD 5076 bytes
font_01_sfnt_off00005c00.bin
988aee1de9be459067c2632cd6533c41c380fd39bb19491918defd75af28648a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C00 10180 bytes

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