Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f010e45420c7f1c…

MALICIOUS

PDF

46.5 KB Created: 2020-08-31 20:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c3607dab638f9180bc414f390fcc184 SHA-1: 7b7b2e26bfc17ce1e93a49b876cbf81a580cba11 SHA-256: 2f010e45420c7f1c6f36f5745d2e5e7c1d7a03ade1eb8e9608fc8a03a7281916
120 Risk Score

Malware Insights

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

The PDF contains a lure for a "maternity leave application form" and embeds a significant number of links. One of these links, https://ttraff.com/wix?keyword=maternity+leave+application+form+singapore, points to a known malicious redirector. The PDF also contains a large number of links to Shopify domains, likely part of an SEO link farm to obscure the malicious intent. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly suggest a phishing or redirection attack.

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.com/wix?keyword=maternity+leave+application+form+singapore
    • https://cdn.shopify.com/s/files/1/0435/3287/7975/files/break_three_days_grace_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/67262163114.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/jajanokodikotu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/20746760987.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/tefakux.pdf
    • https://cdn.shopify.com/s/files/1/0438/3395/0370/files/day_of_the_dead_coloring_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/6160/6550/files/lofiwigufevuworozi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3340/9174/files/firufamuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/8240/7318/files/thyroiditis_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/33945389145.pdf
    • https://cdn.shopify.com/s/files/1/0431/9415/5170/files/animated_mouse_cursors.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/68520912084.pdf
    • https://cdn.shopify.com/s/files/1/0460/7603/5236/files/rozonugowidip.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/what_is_the_frequency_of_light_s-1_that_has_a_wavelength_of_3.86_10-5_cm.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_off00007755.bin
8daf3be91899d7b381f00499f28d62ce2d852feee286ed22ee3e831f2bad2100		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7755 5500 bytes
font_01_sfnt_off00008a19.bin
e1a4e2089795ccf08f8beeb1b811727845aefad7094de96e9da3451d8d0759c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A19 10164 bytes

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