Malicious PDF — malware analysis report

Static analysis result for SHA-256 9282f5774cc85bc8…

MALICIOUS

PDF

43.9 KB Created: 2020-09-13 00:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a0271c4aa3498edb127f987bc19cc33 SHA-1: e1bfb25f29b2e82d67bf9b5031797092f4c25656 SHA-256: 9282f5774cc85bc81454a3385cde7f1914efe6e308c954efa2fcc0f364427d20
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to known malicious redirectors or link farms. The document body, though garbled, includes text suggesting it is a PDF related to 'Mastering ServiceNow Administration', likely a lure to entice users to click the malicious links. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of links to harmful infrastructure.

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.link/wix?keyword=mastering+servicenow+administration+pdf
    • http://sumakij.stocktonjunk.com/uploads/1/3/1/4/131452839/863667.pdf
    • http://files.dawes.work/uploads/1/3/0/7/130740158/tanexiledifej.pdf
    • http://pemutadi.tollyho.com/uploads/1/3/0/7/130740112/11d52dc9.pdf
    • http://vixiz.cherylmoskalukart.com/uploads/1/3/1/1/131164312/4e9e3.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8922/files/polofotimoxuzupibekivi.pdf
    • https://static.usrfiles.com/ugd/6203b9_c32cc83e105f4a65adfb52431f8132a9.pdf
    • https://static.usrfiles.com/ugd/027f51_d5472788a606487bad751622f30f03d7.pdf
    • https://static.usrfiles.com/ugd/cd1d52_7ca8509b02844aed8a404b9df1f26007.pdf
    • https://static.usrfiles.com/ugd/72b0e7_421c356bcdec42debb8b8e7a809e0a2f.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/93846315983.pdf
    • https://cdn.shopify.com/s/files/1/0431/0853/2380/files/delly_belly_full_movie_hd_free.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_off00005f72.bin
152bbe7f01c9a25e7256879d1ff629beb595b676267b88543ad44c122a1cc23d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F72 5388 bytes
font_01_sfnt_off000071c6.bin
a030a0a7ba2d34448e4d07b8a42adf7f6c2e4f0a33fe6e7a4d9130fb7b2ab7b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x71C6 10260 bytes
font_02_sfnt_off000094b5.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x94B5 4324 bytes