Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d8697de9e0c8d9…

MALICIOUS

PDF

48.4 KB Created: 2020-08-21 05:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4be21a937a755a0b3f27ef50fd2042e9 SHA-1: 3219e44a895879e44779d21ec865fda38f1c3483 SHA-256: 56d8697de9e0c8d9364b14cb4af855e621680d4c04ab6e3c6a793e737f8d9ed5
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector's target. This suggests the primary goal is to redirect the user to malicious content via the provided link. 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.com/pify?keyword=4+day+bodybuilding+workout+schedule+pdf
    • http://bamizekux.sogchurch.net/uploads/1/3/2/8/132814439/6312de1ff.pdf
    • http://files.bonusmath.com/uploads/1/3/1/8/131856844/vudapa_nufim_boritibor_ponapuribube.pdf
    • http://gabiwube.uticaenterprises.com/uploads/1/3/1/4/131406390/vinivonikorasifadu.pdf
    • http://files.jencullertonjohnson.com/uploads/1/3/1/8/131856135/roxenag-nanezemetej-xewigoris-zosedemipa.pdf
    • http://files.zumbacatherine.com/uploads/1/3/1/6/131636655/sobujijup-nedavidixipan-merowagu-vopameluf.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/94634425975.pdf
    • https://cdn.shopify.com/s/files/1/0433/9918/4551/files/vocabulrio_ortogrfico_da_academia_brasileira_de_letras.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/78999473816.pdf
    • https://cdn.shopify.com/s/files/1/0439/8697/6926/files/vigoriromukoxupemazidi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/dofaxizeluwojev.pdf
    • https://cdn.shopify.com/s/files/1/0432/6388/5472/files/tatasipikitararedavuvizut.pdf
    • https://cdn.shopify.com/s/files/1/0430/7825/4745/files/togogowulerimum.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/imaginary_numbers_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/3985/7563/files/85483077678.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/manga_drawing_tutorial_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/89949604064.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_off00007da7.bin
737d56301a24d1690fa561b8fdd8d1eda5277cf138d63fa539f2485e89f4eef1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA7 5808 bytes
font_01_sfnt_off0000917b.bin
3177300329310f48e2fe4cbeb082662273b2c704dfbb36d3cda476dfa463e518
pdf-font-stream PDF embedded font (sfnt) at offset 0x917B 10180 bytes