Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ffaacf5f2c3ebe…

MALICIOUS

PDF

80.8 KB Created: 2020-08-07 09:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91d6191e06556956f99a28616e2ef7af SHA-1: fa12ff994742ec072c5895cd5dadbf1d3633fef9 SHA-256: a9ffaacf5f2c3ebe23bdcf4ee18268b3a90a9fe80d580a48756be71b7e15659f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc', which is used in advance-fee scams. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links, likely for SEO manipulation or to distribute malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=anemia+in+pregnancy+malaysia+pdf', reinforcing the lure. The overall pattern suggests a social engineering attack to trick users into visiting malicious sites.

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=anemia+in+pregnancy+malaysia+pdf
    • http://files.synchronicity-investor.com/uploads/1/3/1/3/131398095/6077022.pdf
    • http://files.bellacalore.com/uploads/1/3/0/8/130814279/mumubimogamu-fupedevumebat-ropetiwajo.pdf
    • http://kafemiru.rossmoor-writers.com/uploads/1/3/0/8/130874232/7156439.pdf
    • http://files.wesparklearning.com/uploads/1/3/1/6/131606257/zabosab.pdf
    • https://cdn.shopify.com/s/files/1/0437/2060/5848/files/smoothies_for_weight_gain.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0309/files/muxapemijiredu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6875/8943/files/rotukubakogetirolunoji.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/ketir.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/torejifetamibuxevezed.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/80814431392.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/votupigurujarakovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/13134423593.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/alkylidene_complexes.pdf
    • https://cdn.shopify.com/s/files/1/0440/8783/6822/files/capacitor_bank_installation.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/boot_hill_3rd_edition_download.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_off0000fe5d.bin
fff933f6749693b86c34ba4034a51d3860f5531300b5004426be537afffcce4b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5D 5564 bytes
font_01_sfnt_off0001113b.bin
0e31349b47a9e9155f099e0394965f5c5b830446ba265370e1e9a3be5fab60c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1113B 10912 bytes