Malicious PDF — malware analysis report

Static analysis result for SHA-256 054d35a3a722437e…

MALICIOUS

PDF

48.4 KB Created: 2020-09-09 21:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 394fe056bf23ac1b4f15e8f40edaeb8d SHA-1: 5655d8b5975edadc4c027384cb20a237bbfb2b5b SHA-256: 054d35a3a722437e37754a10d5134384d6f3837d316fdb40f4f5366432c42310
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=e-+safety+incident+report+form'. The document body, though heavily obfuscated, contains this same URL, suggesting it's the primary lure. The presence of a link farm heuristic further indicates a malicious intent to distribute links, likely 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 5

  • 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
  • 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.link/wix?keyword=e-+safety+incident+report+form
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b3bc21_5abe40d9b8cb405cb0694a1b3b04f2b7.pdf
    • https://static.usrfiles.com/ugd/e1c37d_4fefb1c83e3f41239704643f74e77423.pdf
    • https://static.usrfiles.com/ugd/7e6083_761601d3135d4202b43ac82984d848db.pdf
    • https://static.usrfiles.com/ugd/5899d5_5cd71c9f4e8a4a879184a3e13169b1a0.pdf
    • https://static.usrfiles.com/ugd/8c5bc8_14b44cfacea54a1aba1df6d8ba4ef63e.pdf
    • https://cdn.shopify.com/s/files/1/0428/3842/5766/files/.pdf
    • https://cdn.shopify.com/s/files/1/0428/6093/7383/files/fugexig.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/gilbarco_passport_manual.pdf
    • https://cdn.shopify.com/s/files/1/0463/0698/4093/files/59199019260.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/72313995303.pdf
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/rozenirowukesosife.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/23373477429.pdf
    • https://static.usrfiles.com/ugd/a51aec_7ca4a2b0fcb740d98d406d9cc6190f2a.pdf
    • https://static.usrfiles.com/ugd/f99735_590fb9546d934991b08d22abf11a683e.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009996.bin
0823f6e7d693a44f93c916c286d9132fa1b1f6fa07e0afcde5fda4606c6514e5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9996 17744 bytes
font_00_sfnt_off00006401.bin
77c0da17d3c9ef2854f8f6f98f4062b5ecb8b8b5ed01486774f1576d5903d842		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6401 5360 bytes
font_01_sfnt_off0000763e.bin
dcb8a7b5e7ba43c8eb4a8338257e24c93f64a48d4abda2f31161e3640b02a273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763E 10276 bytes

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