Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73e8fafbea99681…

MALICIOUS

PDF

41.8 KB Created: 2020-08-05 10:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d68d84a7438431fd63cab82ac51b5fd SHA-1: 1997427cae0816eddc5afa37c5f46eb66f1c7fcd SHA-256: f73e8fafbea996813ae0be307093d463e93905dbf8457181218274a5d8b3aff5
160 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=animal+cartoon+coloring+book+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text that suggests a lure for an advance-fee scam, likely related to a lottery or parcel delivery, which aligns with the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=animal+cartoon+coloring+book+pdf
    • http://files.poodledynasty.com/uploads/1/3/1/4/131452861/kexewofubiduj_tudozugifuwuso_veropiragugut.pdf
    • http://files.stspeterpaulretreatcenter.com/uploads/1/3/2/7/132740692/kamejozisekosem_dasusewi.pdf
    • http://files.darrylstrange.org/uploads/1/3/0/7/130775432/8552956.pdf
    • http://files.solomonbrookfarm.ca/uploads/1/3/1/3/131380915/mabululufuril-wosamanitepo-nawujejenukudo.pdf
    • http://files.thefoodbureau.com/uploads/1/3/0/8/130874526/0dc6396142.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/45319774764.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/lekenibozulunoxawinovasam.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/65138159540.pdf
    • https://cdn.shopify.com/s/files/1/0433/5245/7369/files/14900376801.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/badogujewinetupepeniziz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/resamev.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7912/files/mevarovuwexujuxuva.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/folewalemovuzol.pdf
    • https://cdn.shopify.com/s/files/1/0438/2166/2365/files/3791356011.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/94401316799.pdf
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/lonab.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_off00006534.bin
f198fdb3bc1039b75862643a7d11ef06ffb7394f882cb7773c116f9f95b92efd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6534 5488 bytes
font_01_sfnt_off000077c4.bin
c3b559ee4d69afb8f4ab006f88ee296641670dd109dcf575cb76e6bac94bee43
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C4 10224 bytes