Malicious PDF — malware analysis report

Static analysis result for SHA-256 71311472d05b9aa8…

MALICIOUS

PDF

44.6 KB Created: 2020-08-30 08:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f16c3d02a03dadf5c305ea5c7140360f SHA-1: b01b7ff6f8228d2b346bf15ad1f7e508c16a8f9f SHA-256: 71311472d05b9aa807e50cc5b02e73379ff4d63264c20fec4ab74a98c1b7a0f1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, https://ttraff.cc/wix?keyword=dragon+quest+1+emulator, is identified as a known malicious redirector. This suggests an attempt to lure users to malicious content, potentially for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=dragon+quest+1+emulator
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/5223/4917/files/1970_corvette_value_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/bilafevobofazozu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/31791777286.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/28675978913.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/all_color_rose_image.pdf
    • https://static.usrfiles.com/ugd/b4a829_7f7431d51d514a0f8536c2c1d0792737.pdf
    • https://static.usrfiles.com/ugd/67f5f7_af0fb47e21aa4f1ea7d8f4b7ae51efb5.pdf
    • https://static.usrfiles.com/ugd/eaf48f_99c96b2936db4c1d84dee8bc2dc9e981.pdf
    • https://static.usrfiles.com/ugd/2e16aa_beb165a24f1248a29c02409a4e4b8f17.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b7039da0d7347e782c7dc53500da723.pdf
    • https://static.usrfiles.com/ugd/12745a_14c861a8774c485bad348f584f3dba9a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7967f1d3deb44bf9ba298d13a5324efb.pdf
    • https://static.usrfiles.com/ugd/3f80ec_f5cfd45aab5b42fd82dc4e357a62d600.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea274ce4b2c140c895b4c319e94a1caa.pdf
    • https://static.usrfiles.com/ugd/77d535_91f24e6d05724439ad82180d14ebf323.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/55718958601.pdf
    • https://cdn.shopify.com/s/files/1/0461/9688/3614/files/lofibofijitirofawedaf.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f5a.bin
5e5ceb796794fe2a77a6b806642dac727d3a73b58d8505b3c1cf18b275377d9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5A 5184 bytes
font_01_sfnt_off000080e9.bin
072f9b3fdb34863c332fbed883b1e917f89bef47ef0eb960cab70170a3327999		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E9 10984 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.