Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1eee88f06db27e5…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 08:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3948d9fd1242a4cc5ca9a8e3fdae2d SHA-1: ccba88773956781dd79014ffd5c474baa80fc5db SHA-256: c1eee88f06db27e5b3f2619bf10ed76b026dac8bd12586c68f30001ba91a6bd9
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body, though partially corrupted, contains text related to 'free printable daily chore chart template' and includes the primary malicious URL. The primary malicious URL, https://ttraff.com/pify?keyword=free+printable+daily+chore+chart+template, is likely used to redirect users to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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/pify?keyword=free+printable+daily+chore+chart+template
    • http://nodep.hrmattersottawa.com/uploads/1/3/1/6/131637814/pemolenezeme-vakidu-tilate-tuxefobolexin.pdf
    • http://fokal.ignitethejoy.org/uploads/1/3/1/1/131164460/televalow_dubef_wabupufidujo_sexinogumopajiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/newalodirudemupal.pdf
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/1450998432.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/61038869983.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/seismic_analysis_of_safety_related_nuclear_structures.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/larodavekuxesitefaboba.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/19851938021.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/jodekowus.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/vopib.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/bethink_yourselves_leo_tolstoy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/dozunevofakeguse.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/19450214238.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/41289693502.pdf
    • https://cdn.shopify.com/s/files/1/0438/9116/3291/files/majesty_2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/how_to_cite_a_article_without_author_apa.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_off0000660e.bin
dde42941eb5e327aaf7cced852548ae0fbc83f65f8662da358f37840b8a0f160
pdf-font-stream PDF embedded font (sfnt) at offset 0x660E 5332 bytes
font_01_sfnt_off000077f7.bin
eb19c726b51e193a3262066388dfa7035e76fe6eb8e290b6571e3c2a8db12890
pdf-font-stream PDF embedded font (sfnt) at offset 0x77F7 10216 bytes