Malicious PDF — malware analysis report

Static analysis result for SHA-256 acec8bd344689b47…

MALICIOUS

PDF

40.2 KB Created: 2020-08-26 00:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94d5f687252204cd78b242a032384599 SHA-1: b5e08646368f20a55a0fad8a12b51381ef0a6cd3 SHA-256: acec8bd344689b475abece1377891537f47b81ed7599ca62f235bc4d5985bda0
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, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

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=how+the+other+half+lives+quotes
    • http://files.anchorageteaparty.org/uploads/1/3/2/7/132741764/xugunoj_mujukesisemewe_raponimasa.pdf
    • http://pikilufof.hhsclassof1979.com/uploads/1/3/0/8/130814229/lumemabegu.pdf
    • http://files.newportpaddleventnor.com/uploads/1/3/1/3/131384208/vinudupadub_lezunadu_kunese_lexupobavuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3001/0263/files/tratado_de_bucareli.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/13351025797.pdf
    • https://cdn.shopify.com/s/files/1/0428/5435/1015/files/dugamos.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/xejavatimemegalupazilafuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/votivakijozavozezaseniwog.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/71957897574.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0775/files/apps_answers_twenty_one_track.pdf
    • https://cdn.shopify.com/s/files/1/0433/4403/5993/files/bitbucket_zip_archive.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9968/files/difference_between_bolt_and_screw.pdf
    • https://cdn.shopify.com/s/files/1/0436/1961/4884/files/narrative_report_about_foundation_day_in_school.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_off00006047.bin
18106767559cfa7519a8e8e4ccd327584aa078c052a9bdfd48206159a5ea6e6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6047 5092 bytes
font_01_sfnt_off000071ac.bin
715bc8c579d15b0cd79bbfe4dfc902eb2cce7e29d21391b376c4bed646e6b614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AC 10108 bytes

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