Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3adc813759160f…

MALICIOUS

PDF

49.9 KB Created: 2020-08-23 21:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74142bbdd4b119695711b1a93c300fe5 SHA-1: 5f443ef3680416547ad13a94682485d724ee9f71 SHA-256: bb3adc813759160fbad0f8f2500170b47de8a091c960bcde762d24a5e2dda373
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to a redirector service. The primary redirector URL is https://ttraff.cc/pify?keyword=wedding+invitation+template+free+lilac, which is flagged as malicious. This suggests the document is designed to lure users to malicious sites. No scripts were extracted from this sample.

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.cc/pify?keyword=wedding+invitation+template+free+lilac
    • http://files.ocarmburgosph.org/uploads/1/3/1/6/131607053/6532447.pdf
    • http://zenof.robbenoptics.com/uploads/1/3/2/7/132740214/mezorunuvev_sapakikuxi_pimonatonel.pdf
    • http://files.saotago.com/uploads/1/3/0/7/130740571/zezujo.pdf
    • http://files.alenaephotography.com/uploads/1/3/0/9/130969761/zuluwajuzoziluraj.pdf
    • http://nosamuwo.hailstateunis.com/uploads/1/3/0/8/130874493/5425444.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/michigan_salmon_fishing_report_manistee_river.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0718/files/siterategawi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9270/9271/files/92646549748.pdf
    • https://cdn.shopify.com/s/files/1/0437/6425/2826/files/jixarenijom.pdf
    • https://cdn.shopify.com/s/files/1/0435/6318/8383/files/java_8_lambdas_functional_programming_for_the_masses.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/69333400473.pdf
    • https://cdn.shopify.com/s/files/1/0431/9979/1265/files/6032326216.pdf
    • https://cdn.shopify.com/s/files/1/0440/7872/7318/files/vojemego.pdf
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/negogizemexekewobusog.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/lala_ramswaroop_panchang_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/nutricion_enteral_y_parenteral_arenas.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1001/files/vetagatapuxi.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_off000085aa.bin
e4378fd45bfce05ac0f92fa1f44ae8ea57baedbb9b8c2a9153f3aa96516fa299		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85AA 5372 bytes
font_01_sfnt_off000097e8.bin
4fea3be28c673d9b41b42860d79e1dc46d9b8dc3ef39675bbb53f78f4b899e73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97E8 10084 bytes

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