Malicious PDF — malware analysis report

Static analysis result for SHA-256 aabf2f4ad449540d…

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 02:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6acccf41deb49e09ac436c9c69f2771f SHA-1: 335afb16ab8ff22e202f4cd007c131e4652af0e9 SHA-256: aabf2f4ad449540dd40743c5ea49b46e2e79bd15bdf96717a038303324391464
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links directs to a known malicious redirector, 'ttraff.cc', with a query parameter suggesting a lure for 'antonyms worksheet for grade 3 pdf'. This suggests the document's purpose is to redirect users to malicious sites, likely for further exploitation or phishing. No scripts were extracted, and the document body is heavily obfuscated.

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=antonyms+worksheet+for+grade+3+pdf
    • http://files.3rdlayertattoo.com/uploads/1/3/0/8/130874110/b933a6a4e.pdf
    • http://files.kinematicintegration.com/uploads/1/3/1/8/131856160/lijidudat_wigap_jixoruritepa.pdf
    • http://files.bookbrokers1.com/uploads/1/3/2/8/132816066/vobevoze.pdf
    • http://files.thecovenantschristandyou.com/uploads/1/3/1/3/131379434/94345039.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/dutoranupuraporob.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/sunabetovukipukuzezite.pdf
    • https://cdn.shopify.com/s/files/1/0429/5258/9465/files/sefurabolepirob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/53804769471.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/53690995264.pdf
    • https://cdn.shopify.com/s/files/1/0430/5249/9095/files/52707276743.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/pukavejodulagafi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/jirobemitojujenovovizazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1824/files/2090200773.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/malukimavapajoxilipo.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_off0000649e.bin
f86d2901847dea1fc61ff95e5eed46b9ab9a079bfc09f703209844278652e25d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 5832 bytes
font_01_sfnt_off00007873.bin
11e2ac8f038b213171eca3afc8e9de9728fceebc07dda5ee0ca2769b4971cac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7873 10568 bytes

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