Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2badb762b946028…

MALICIOUS

PDF

39.2 KB Created: 2020-08-06 19:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d798e0c41b412338a099761cabce1e4 SHA-1: fb6e916cc036312202dc30cc32cf6053077ecca6 SHA-256: a2badb762b946028c09b014f3af9789d0120b6ee11f2d23877d43adb40d9868e
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with the primary link redirecting to malicious infrastructure. The document body text, while partially corrupted, contains the same book title and URL as the malicious redirector, suggesting a lure to download content. The embedded URLs are used to host what appears to be a collection of PDF files, likely to improve search engine ranking and attract victims.

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=eva+luna+isabel+allende+pdf+descargar
    • http://files.melissamccartney.co/uploads/1/3/2/6/132681153/7575564.pdf
    • http://files.newbeginningswalworth.com/uploads/1/3/0/7/130776841/tunanazopab.pdf
    • http://files.riverpoethansen.com/uploads/1/3/0/7/130739856/fowewu.pdf
    • http://files.grovecityfoodpantry.net/uploads/1/3/1/4/131483147/2e1d32.pdf
    • http://files.stressfreesettlements.com/uploads/1/3/1/8/131858044/ponuwuraz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/zilegiguzimiguleleriguzik.pdf
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/98902267266.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/69023363468.pdf
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/85901798148.pdf
    • https://cdn.shopify.com/s/files/1/0437/4721/3464/files/novuvaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/bukhari_hadith_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/44578702231.pdf
    • https://cdn.shopify.com/s/files/1/0431/0361/7173/files/vafig.pdf
    • https://cdn.shopify.com/s/files/1/0440/5372/5334/files/hewlett_packard_cm2320nf.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6293/files/fozum.pdf
    • https://cdn.shopify.com/s/files/1/0432/3177/2835/files/dagesobonepogizumevi.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_off0000584e.bin
9fbeb3b4181da909b5d254eecdca5406b0a101159fff6abff00b37e091316039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584E 5480 bytes
font_01_sfnt_off00006b04.bin
52e0d816d52a3083a4f0ec45291c530fb331d0561192e6fff86e9effae26ebdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B04 11208 bytes

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