Malicious PDF — malware analysis report

Static analysis result for SHA-256 b783e16b1e05e2e5…

MALICIOUS

PDF

43.5 KB Created: 2020-08-13 15:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95700a557c318afc964372585465b452 SHA-1: 6217dccaa22b151a0c23918cf07368dcdd437615 SHA-256: b783e16b1e05e2e5902bae4b5ef9817683620793ee5ae269872c174f27ee0a8c
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One critical heuristic flagged a link to a known malicious redirector infrastructure at 'ttraff.com'. Another heuristic identified a link farm with 17 external PDF links, many hosted on 'cdn.shopify.com'. The document body itself contains metadata and a URL that appears to be part of this link farm.

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=mitolohiya+ng+pilipinas+pdf
    • http://files.digginthedirt.com/uploads/1/3/1/1/131164418/butawok_kevovudologit.pdf
    • http://files.jacquelinejanas.com/uploads/1/3/1/0/131069987/ligowuvese.pdf
    • http://files.kedmusic.ca/uploads/1/3/0/7/130738681/3847157.pdf
    • http://files.cuestacollegerodeo.com/uploads/1/3/1/4/131483550/f518ae417.pdf
    • http://files.triggersgunshop.net/uploads/1/3/2/6/132695535/295f01c.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9525543421.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6331/files/27665251666.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/les_accents_en_francais_grammaire.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/yesterday_andhra_jyothi_news_paper.pdf
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/felameresitojadu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/ruragevuxogudufuwuxijima.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/zoligesizibuzunemubu.pdf
    • https://cdn.shopify.com/s/files/1/0436/8069/4437/files/acrobat_editor_free_download_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0435/3599/0936/files/how_to_copy_balance_sheet_from_to_excel.pdf
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/54565529576.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2392/files/exceptionality_definition.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
font_00_sfnt_off00005e92.bin
5c3d026e131dd1b7c0dd3b5ca2cdb3320f37fea1433ca45c4ce404644db8714e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E92 4984 bytes
font_01_sfnt_off00006f84.bin
52964fd1c4897a5f7ea88909fcef961995f0375c6a1fdc40d71aa3e06455fa7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F84 9832 bytes
font_02_sfnt_off00009149.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9149 4324 bytes