Malicious PDF — malware analysis report

Static analysis result for SHA-256 a400f8fc37ccc7bc…

MALICIOUS

PDF

35.1 KB Created: 2020-09-14 19:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce4437c1253ddb69d77f078aa01be1e SHA-1: 15cbdf0e29df258ed9131211d4b73781d48316c0 SHA-256: a400f8fc37ccc7bc6443814256ea07d68b685e3bf012d501c01c5cea273df001
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of embedded links, indicating a link farm strategy. The primary malicious URL identified is 'https://ttraff.link/pify?keyword=ap+physics+1+simple+harmonic+motion+multiple+choice'. The document body contains garbled text and embedded URLs, further supporting the malicious intent of redirecting users to potentially harmful sites.

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.link/pify?keyword=ap+physics+1+simple+harmonic+motion+multiple+choice
    • http://files.marriedmarks.com/uploads/1/3/2/8/132816158/wawezanuz-titun-resuta-ponupax.pdf
    • http://files.rusticbilliards.com/uploads/1/3/1/4/131453784/7311987.pdf
    • http://files.ubcaai.org/uploads/1/3/1/4/131407227/vuzekego.pdf
    • http://files.hlaa-or.com/uploads/1/3/1/3/131380894/5906340.pdf
    • http://dabefud.rickbermanceramics.com/uploads/1/3/1/8/131856158/nipetunetan.pdf
    • https://cdn.shopify.com/s/files/1/0430/3778/6266/files/zozufopifogo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/atlas_de_microbiologia_medica.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/4055387403.pdf
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/bexagebenaxajuxasobodowur.pdf
    • https://cdn.shopify.com/s/files/1/0431/4326/6458/files/75242982211.pdf
    • https://cdn.shopify.com/s/files/1/0463/5050/0002/files/gite_les_sapins_araches.pdf
    • https://cdn.shopify.com/s/files/1/0433/5504/6037/files/52097763524.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_off00004c4c.bin
7f96232cfb432b13aa697752aa06a9a984f63a858085feb1db4b67b09a929146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4C 5316 bytes
font_01_sfnt_off00005e45.bin
aa676c600532cfcc375aa879f330d9059c4ac594948bc71a7a2751bbd2e3ac1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E45 9744 bytes

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