Malicious PDF — malware analysis report

Static analysis result for SHA-256 d401dd9ed9963631…

MALICIOUS

PDF

44.6 KB Created: 2020-08-07 20:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c46bc659c1c6ffd6d67bcf526c50f7f8 SHA-1: 6b6649d713d4accb7ae6c7c403aea3752870c30e SHA-256: d401dd9ed99636314b256d4a800e0dd62924e4048bc061a03d60dfd45657b26c
128 Risk Score

Malware Insights

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

The PDF contains a clear call-to-action and a link that redirects to known malicious infrastructure. The document body text, though heavily obfuscated, contains keywords related to a 'download' and the malicious URL. The presence of a link farm further indicates an attempt to distribute malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=fda+key+answer+2020+pdf+download
    • http://files.solidwastemanagement2030.org/uploads/1/3/1/8/131857916/2332e.pdf
    • http://nifukuw.bathhousebasics.com/uploads/1/3/1/8/131856158/6050874.pdf
    • http://files.chatteriemainecoonroswell.com/uploads/1/3/1/4/131407164/munodigadomosugafo.pdf
    • http://files.karenkiddlab.com/uploads/1/3/1/3/131380729/3094053.pdf
    • http://fidaw.anairda-arte.com/uploads/1/3/0/8/130874330/c5765e95.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/gofisaxawomesumijom.pdf
    • https://cdn.shopify.com/s/files/1/0437/0631/9001/files/the_masorah_of_biblia_hebraica_stuttgartensia.pdf
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/sasutenilak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9213/2508/files/62990846108.pdf
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/pidamogiwuzi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/ansiedad_generalizada_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/betiwava.pdf
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/rezukidonefeti.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/30160755695.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67768868558.pdf
    • https://cdn.shopify.com/s/files/1/0432/0110/1985/files/lefotakirorokomutenidekim.pdf
    • https://cdn.shopify.com/s/files/1/0440/1466/5878/files/sonikekusojapagavipigul.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000715c.bin
7cdb2446ae3e8c798f7558eb239f04477db18630da47564a47819321167ec3b1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x715C 4592 bytes
font_00_sfnt_off00005e6a.bin
94a73d3b65b0d044b111a3f35247724b46fed6fc57ca004efa91bbdfb2c43a6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6A 5524 bytes
font_02_sfnt_off00008216.bin
29168769a4c5a0e51766ca79e121c35115aee9a05c92993b250d6140041eaf3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 10348 bytes