Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5499961b45c03aa…

MALICIOUS

PDF

48.5 KB Created: 2020-08-25 12:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46fe699ecad33ccf215eaf390af1c552 SHA-1: adeaae931ef901b1790af5e7bec8168807e6265f SHA-256: b5499961b45c03aa77101d12a55538657f651f79b032d44dbdee3f3c5c881053
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for an 'interior design client brief template'. The primary malicious URL, https://ttraff.cc/pify?keyword=interior+design+client+brief+template, is likely intended to redirect the user to a malicious site. The presence of numerous other links to Shopify and other file-hosting services suggests a broad campaign to distribute malicious content.

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=interior+design+client+brief+template
    • http://files.yourcargirl.com/uploads/1/3/0/7/130740521/5203952.pdf
    • http://files.newmorningacu.com/uploads/1/3/1/1/131164063/josifer.pdf
    • http://files.lincolncountyhistorical.org/uploads/1/3/0/7/130739284/1689443.pdf
    • http://bowevapo.accessphenomenance.com/uploads/1/3/1/3/131384169/7227399.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1915/files/fitipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8717/files/barron_s_sat_subject_test_physics_2nd_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0465/8855/9525/files/middle_grades_science_measuring_up_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0463/6842/4091/files/tefarutidow.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/fipaboja.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/articulos_cientificos_de_nutricion_animal.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/50642603390.pdf
    • https://cdn.shopify.com/s/files/1/0434/8946/0376/files/ledinifemagile.pdf
    • https://cdn.shopify.com/s/files/1/0437/0314/0506/files/4894393646.pdf
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/18950725139.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/cabergolina_en_el_embarazo.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_off00007970.bin
5167e015761ecd1b9fed87568d910be03f62e5a1dddbd39af75facc86e64279f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7970 5552 bytes
font_01_sfnt_off00008c32.bin
694d7f3f698178c93a4502b2161c091201c91cd98d27f1d500940ecad70b457b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C32 13008 bytes

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