Malicious PDF — malware analysis report

Static analysis result for SHA-256 e808c5824c2bfa91…

MALICIOUS

PDF

42.1 KB Created: 2020-08-20 12:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25d16ad7192cff1aada7a26f1ea08f50 SHA-1: 091b2f9e4fdd05d72a78941ca9aca4e99057049f SHA-256: e808c5824c2bfa911f512fc073851a4787548f7aa2f3b2f96d91902bff1357e9
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a 'password-protected archive lure' heuristic suggests this PDF may be a precursor to delivering a password-protected malicious archive.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=new+christian+songs+ringtone
    • http://files.arlingtonmsband.com/uploads/1/3/1/6/131606087/ddee7.pdf
    • http://files.iwfgeorgia.org/uploads/1/3/1/4/131455883/dofez.pdf
    • http://files.theliteracyjourney.com/uploads/1/3/2/8/132815063/bbc7ebca.pdf
    • http://wimex.narkiaritchie.com/uploads/1/3/1/6/131636725/molunafidur.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3820/files/9811349151.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7263/files/joxuguxugizelalefo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/bengali_book_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/fusionner_les_fichiers_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3085/files/53694659162.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/50895906777.pdf
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/41897657393.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/77284722318.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/50569683843.pdf
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/income_tax_rate_in_pakistan_2020_17.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/fimakagutakumatapaxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6351/files/53731812354.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/xivilotigedu.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_off000067c0.bin
a49f1b4e77ad353bd7b7831b166ae33a0484e70c928428fa20f3280233b88f96
pdf-font-stream PDF embedded font (sfnt) at offset 0x67C0 5088 bytes
font_01_sfnt_off0000791d.bin
2f026655d9a9d8dd5c8da2ac8d94bcb714e1de749c4d2169bc1fb9774e8a0ce8
pdf-font-stream PDF embedded font (sfnt) at offset 0x791D 9944 bytes