Malicious PDF — malware analysis report

Static analysis result for SHA-256 290d88e6fe050037…

MALICIOUS

PDF

40.1 KB Created: 2020-08-30 10:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d5e0e370d674f847e34a4fe18a94a56 SHA-1: 5d527f30122fdef2898585d4c3c8469d64bf6579 SHA-256: 290d88e6fe0500378f13f23bf888b41a426b4e1f6d229ddd918fa4558e4d8987
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with one primary URL pointing to a known malicious redirector. The document body is heavily obfuscated and contains a URL that is likely intended to lead to a malicious payload. The presence of multiple links to Shopify-hosted PDFs suggests an attempt to disguise malicious activity within a seemingly legitimate context. No scripts were extracted from this sample.

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=beginners+guide+to+tropical+fish+uk
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/subaru_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/44056868736.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9735/files/benjamin_franklin_daily_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0428/7866/4867/files/twitch_chat_in_obs.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/sowazaliw.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/25190561262.pdf
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/independent_and_subordinate_clauses_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/17427898968.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/blippo_black_rounded_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/rarisojujotowak.pdf
    • https://cdn.shopify.com/s/files/1/0436/5660/9957/files/jedalolanidikopemape.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/youtube_playlist_duration.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_off00005f1c.bin
4dc0a07366b9dcafe45977a654ce694c6f0a3fb63c2e697752bd8139470392e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1C 5528 bytes
font_01_sfnt_off000071e1.bin
61d6411d1785633f3cf1149f6f520f72a97069988c4d0aec96bcc095fc9a3600		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E1 10000 bytes

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