Malicious PDF — malware analysis report

Static analysis result for SHA-256 2445f18f0259b3fd…

MALICIOUS

PDF

55.0 KB Created: 2020-08-17 06:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49c8b4107be5269845a3f6db11b2f9eb SHA-1: 1a888bcd910bcb2506fc0a0c724f1c7b4a27a9e5 SHA-256: 2445f18f0259b3fd22ee45668095801d418e7cb69c0dd08c8f8439be4c56b3b8
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a phishing or redirection attempt. The document body, though heavily obfuscated, contains the text "Logical questions with answers pdf" and the malicious URL, reinforcing the lure. The presence of multiple PDF links and a malicious redirector suggests a link farm or redirection strategy to ultimately deliver a payload or phish credentials.

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=logical+questions+with+answers+pdf
    • http://garigejuz.polizzigenealogy.com/uploads/1/3/0/7/130775350/fimeraxuv.pdf
    • http://dabowa.creedpaintings.com/uploads/1/3/1/6/131606069/niwitika.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/filedujexitumo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5323/3814/files/antimalarial_vaccine.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/sukinanogununudisixuwatik.pdf
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/kikinozokijanosaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/tikajuvipozenaxegu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/dubudunuximipijijonalo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/5486958656.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/open_rhye_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/99976994957.pdf
    • https://cdn.shopify.com/s/files/1/0435/7423/1199/files/enter_the_gungeon_turtle_problem.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/buwijikot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a5d.bin
9019c1865294a9bfacabce1c77caf555e53b73c92cd53e3b67e77e8b8180bc5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5D 5456 bytes
font_01_sfnt_off00009ced.bin
e20052b79abd35250a7301e6341aed0523e3eaead850590d7d8a9e2ada1b2071		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CED 10736 bytes
font_02_sfnt_off0000c0e0.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E0 4324 bytes

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