Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f19ccddb68fc3b…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 15:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78ff1bda7711da455ab77b4d68d8fe63 SHA-1: e3b4af828460ca58224881cb57eebaf069cd87a5 SHA-256: a4f19ccddb68fc3bceac755cb6f9bbdebceb92ea5b135df01bc6fe216e9d9c5f
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found by heuristics. This suggests the document's primary purpose is to trick the user into visiting the malicious URL, likely leading to further compromise.

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=auditorium+design+requirements+pdf
    • http://files.tamarindcopywriting.com/uploads/1/3/2/6/132680789/48f63.pdf
    • http://files.rbc-l.com/uploads/1/3/1/4/131406604/9534c4047.pdf
    • http://files.thomasfamilyadventure.com/uploads/1/3/1/0/131070733/81607f7d18870.pdf
    • http://setekug.handson-la.com/uploads/1/3/0/7/130775448/supiz-motaxoruxigu-jupixej.pdf
    • https://cdn.shopify.com/s/files/1/0429/3256/8220/files/analisis_e_interpretacion_de_estados_financieros_perdomo_moreno.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/rojawizefagemupenoxedat.pdf
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/fawina.pdf
    • https://cdn.shopify.com/s/files/1/0437/0314/0506/files/business_action_plan_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/7397/8011/files/sogegemozex.pdf
    • https://cdn.shopify.com/s/files/1/0437/6117/2631/files/31954070384.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/baldur_s_gate_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/23642951945.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/sajoxiluwobitowifuwifo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1940/2397/files/pawaxokozalazulefukaka.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/zutusofaluzox.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/88728274946.pdf
    • https://cdn.shopify.com/s/files/1/0443/8884/3686/files/appositive_phrase_examples.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/42169971528.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_off000074f7.bin
23c2e60d2df9de40b1c9d39dc215709a99b5e89ea60206cafe70b6e57bf6d6df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F7 5236 bytes
font_01_sfnt_off000086a7.bin
3512a49017ed08925a76f53332b57dab2d84473f69d8d4b80230b59b2aa4d270		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86A7 10208 bytes

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