Malicious PDF — malware analysis report

Static analysis result for SHA-256 30954c0e85f667ea…

MALICIOUS

PDF

41.6 KB Created: 2020-08-08 02:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5cadf91c731988320258efde822d466 SHA-1: 2f256335009b9ae4e02e68ae5e8dd2aa94b727a7 SHA-256: 30954c0e85f667eaf0ffe76672fcf8d3434a3b7baa4f7c27024fc4dba1fb907d
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically the URL https://ttraff.cc/pify. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains references to the same redirector URL and other benign-looking PDF links, likely to improve SEO and disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=supply+chain+management+strategy+planning+and+operation+chopra+pdf
    • http://files.mijunktiquescollection.com/uploads/1/3/0/7/130776326/jawuma-kutolupoxanodig-muwiwu-bixanisubexu.pdf
    • http://files.nourishedearthapothecary.com/uploads/1/3/1/4/131408970/4ab11b7fd74eaf.pdf
    • http://files.kingdom-mindedmoms.com/uploads/1/3/1/6/131606330/saduro-kilanuxunelus-xuvewiga.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/tovepudikud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70838758317.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/92783456863.pdf
    • https://cdn.shopify.com/s/files/1/0432/1109/6221/files/12365038497.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/20300584608.pdf
    • https://cdn.shopify.com/s/files/1/0440/4248/5910/files/diseases_related_to_carbohydrate_metabolism.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/banemisosuda.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/wojezavuforogulimisatupe.pdf
    • https://cdn.shopify.com/s/files/1/0439/3231/9912/files/59461891475.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/vemalikivapem.pdf
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/what_is_validity_and_reliability_in_research.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_off00006178.bin
ec8514fca9bee25bea1ee0257d44f7058ae2bf8911dc9cb8a2c372a4dfc5147e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 5776 bytes
font_01_sfnt_off000074fd.bin
d0c73dc09adb69ece6f5b52298142d2428cf04c6be70acbb2875633976897d9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FD 10492 bytes

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