Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a94ad205ec3db7e…

MALICIOUS

PDF

47.9 KB Created: 2020-08-23 18:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1b08793308aa801c25dee656ceac5ad SHA-1: e05dd2150eb33046c277c612567fc4602db6ba8b SHA-256: 9a94ad205ec3db7e77676f6cbd6f0739cc8b10092dabe74ba6ec808606b0ab30
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=england+vs+kosovo+tv+guide', which is flagged as malicious. The presence of a large number of external links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to distribute malicious content. 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.com/pify?keyword=england+vs+kosovo+tv+guide
    • http://files.utahskillsusa.org/uploads/1/3/1/3/131379830/471130a4f04.pdf
    • http://files.blowingoakfarm.com/uploads/1/3/0/9/130969498/nidixulusus_fojetorelamuti_pupodowagudowuk_dopoxobi.pdf
    • http://files.deodd.com/uploads/1/3/1/8/131856290/cfca5e.pdf
    • https://cdn.shopify.com/s/files/1/0429/3938/3971/files/kveldulf_gundarsson.pdf
    • https://cdn.shopify.com/s/files/1/0440/6283/4853/files/wuwasonopazavup.pdf
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/loi_binomiale_1ere_s.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/21334839624.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33540287451.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/71401692992.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3013/files/bradford_protein_assay_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/linkedin_phishing_email_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/1392/9122/files/5991632513.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/kevizaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5227/7670/files/tamiwamonepebaraxejid.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_off000073d9.bin
63b5aeca3375f9626433105a6691e16e53a652290e2241615e0717a680760e4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D9 4976 bytes
font_01_sfnt_off000084e8.bin
937ce843e356e13b5d1561ddabfcccf95897de4592f3931d9fa46442ad9dd02c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E8 14732 bytes

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