Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c889011fc45294…

MALICIOUS

PDF

48.6 KB Created: 2020-07-31 09:15:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2eb2b6634cc8484798a88ef6f012858 SHA-1: 19f95b7efd89a4af9d24a891b985ffab09171c49 SHA-256: 24c889011fc45294d3a65c72c1c8b812bfeef565025046bb215685e5de14e3be
150 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, appears to reference 'amlodipine package insert pdf davis', suggesting a lure to trick users into visiting malicious sites. 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=amlodipine+package+insert+pdf+davis
    • http://files.makefunoflife.net/uploads/1/3/1/3/131381021/ganuto.pdf
    • http://files.fear-less.co.nz/uploads/1/3/1/3/131398573/xodibari.pdf
    • http://files.acenursingeducation.com/uploads/1/3/0/7/130775373/deregawagadugeke.pdf
    • http://files.rockyridgefarm.org/uploads/1/3/1/4/131453698/809901.pdf
    • http://files.kwjclassiccargifts.com/uploads/1/3/1/4/131437513/janosor_zexaxefirore.pdf
    • http://files.roc
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/vusebawivoxolale.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/xokufewopotapib.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/70882676612.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/pijapoxikipuwozutuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/sumotezaravagewasaduva.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8382/files/kuluwamuwovasukome.pdf
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/vezudofaguk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/9463540341.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/nojakitu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/zimof.pdf
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/97580030984.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/rakif.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8174/files/nibebexesigipelaperor.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1107/files/35846345537.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_off00007fd0.bin
d59828fbc61e689896da71d26826177e21d2a0623ca14a92b242e35869ab8bcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD0 5376 bytes
font_01_sfnt_off00009208.bin
dd2fe3449e436b4ead5f1f2e77a836d97a781598d703185add3365484837c94c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9208 10208 bytes

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