Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c79fc44b28d710…

MALICIOUS

PDF

37.7 KB Created: 2020-08-08 03:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3147459201b578a794d597ce947e9c8 SHA-1: 5439f6043dc8dfd95c25e6519de2e642a26a183f SHA-256: e6c79fc44b28d710bbf019fcf2f7e1c2f431ff01c78af2304eb80bf27f8d8640
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify, likely for SEO manipulation. The document body, though partially corrupted, contains text related to downloading a 'Joker graphic novel PDF' and includes the malicious redirector URL, reinforcing the lure. The presence of a 'download button' heuristic further supports the social engineering aspect of this document.

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.com/pify?keyword=joker+graphic+novel+pdf+download
    • http://rowexepek.traditionalgreece.com/uploads/1/3/2/7/132740214/tefaga-noveval-pogexigul-raxoniziwixibow.pdf
    • http://files.bpesfoundation.org/uploads/1/3/1/8/131856186/fababu_jemogonu_zamifiri_guviwalopati.pdf
    • http://files.rchfs.net/uploads/1/3/0/8/130813400/sasuriradu_juxikuxakomuno.pdf
    • http://files.tacomateasandherbs.com/uploads/1/3/1/1/131164118/wewolutokixoveze.pdf
    • http://files.amyziserevents.com/uploads/1/3/0/7/130739529/sagafagimanili.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/minecraft_power_converters.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/73637790965.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/ruwemeb.pdf
    • https://cdn.shopify.com/s/files/1/0439/3595/7147/files/zewazadirefejobufazuwus.pdf
    • https://cdn.shopify.com/s/files/1/0431/4264/3868/files/guduxakatibokoxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/2075879096.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/zonazufevuzusiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/zutixojukixibidewuxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/pdf_attachment_not_showing_up_in_email_iphone.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_off0000547a.bin
72e4e18969b7d258e25a9761f44e0f1b00bc6adfbbae78f360b23bb7d9de4c2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x547A 5444 bytes
font_01_sfnt_off00006718.bin
dcbe8212e3391b679a933ce8cf6f6f8256c50ed6bc00ab8bf4271e341735bb00
pdf-font-stream PDF embedded font (sfnt) at offset 0x6718 10252 bytes