Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2489183f45f7f7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-21 09:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 612db06d1d8f2158defe4ed2c58eded7 SHA-1: a8075b04b8dd557959d46dca870c968f1ac36af9 SHA-256: ed2489183f45f7f74d35c97440441cdef95f098c1cda9670b50ecf18ba55a57e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) and then to various Shopify-hosted PDF files. This indicates a link farm or SEO poisoning technique designed to drive traffic to malicious infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=pdf+worksheet+on+factoring+polynomials, which likely serves as a gateway to further 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.com/pify?keyword=pdf+worksheet+on+factoring+polynomials
    • http://files.sharingeducationlearningforlife.org/uploads/1/3/2/7/132712206/0265b60a.pdf
    • http://vuradasab.creeksidekennelsgsd.com/uploads/1/3/1/4/131437914/9d030598a4c.pdf
    • http://files.shaunagoodingreiki.com/uploads/1/3/0/8/130813931/sinisinevek.pdf
    • http://kaxezikuk.chrisschnabelart.com/uploads/1/3/1/3/131378776/28f449e975b6a.pdf
    • http://kefijuki.howardfriskphotography.com/uploads/1/3/0/9/130969060/fojerujisimarego.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/30729056353.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8658/files/media_query_for_desktop_tablet_and_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/speed_queen_commercial_washer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/fujasugagajixuwok.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/9013/files/vikupisuzefoteximefis.pdf
    • https://cdn.shopify.com/s/files/1/0437/8260/2910/files/dafiwekirajidukaposimujed.pdf
    • https://cdn.shopify.com/s/files/1/0450/3266/9334/files/synonyms_words_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7526/files/87687061080.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/95958750115.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/nivelowanukapowo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.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_off00005f8a.bin
2d6ec0d66a95bb768474f73b72e68cfb09d3102fe36af925fb6265db6ee7ce3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8A 5828 bytes
font_01_sfnt_off0000734f.bin
ebab9a2ef8191ac4e4ae9804de86071fda5448a1805b0aa4e32bbe90fe0bd288		 pdf-font-stream PDF embedded font (sfnt) at offset 0x734F 10400 bytes

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