Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d90adad182fdc2…

MALICIOUS

PDF

41.7 KB Created: 2020-08-03 05:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbb120d18bbebf6e0d812dcdb75e0cc8 SHA-1: cd760e3686b947699be8c02a7e3ee148f43082fd SHA-256: 60d90adad182fdc2cbe8ec4de9c1f200619151a6aba07eeb354fce7e14ae6c7b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating it's a redirector link farm. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=ffxiv+shadowbringers+ost', which is likely used to redirect users to further malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/pify?keyword=ffxiv+shadowbringers+ost
    • http://files.glasgowsain.com/uploads/1/3/1/4/131437380/kokuxerid-bujijow-liwamale.pdf
    • http://files.glaciercitygardener.com/uploads/1/3/0/8/130874246/luvem.pdf
    • http://files.kathleenbrownpsychicmedium.com/uploads/1/3/1/4/131406258/daxaxi_ladezise_rebutuboxo.pdf
    • http://files.newhopechurchnc.org/uploads/1/3/1/4/131409090/1695293.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/bars_and_melody_hopeful.pdf
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/84185801522.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/79576494092.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/39446548202.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/mijikekaxofab.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/sanubemigelo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/sosifatanevoregi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/domixozikezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6015/7855/files/mudisidujasijop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/pijuke.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/gumezaxabijefusikub.pdf
    • https://cdn.shopify.com/s/files/1/0437/6585/8455/files/15393713905.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/sikunasifimafuma.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005822.bin
c506d35d29f52c7e2f02afcb6ce32a737ef922489946f8ac31eaa4227c393aed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5822 5452 bytes
font_01_sfnt_off00006ac2.bin
23a86c57a0e1d743c129bb598b90a0d0016e01c69e5c8d7b357ee3269a67e969		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC2 15264 bytes

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