Malicious PDF — malware analysis report

Static analysis result for SHA-256 7487e345929fd8c3…

MALICIOUS

PDF

34.4 KB Created: 2020-08-19 11:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c980a9377e15ff6b9ecff9b691ebd8e SHA-1: f3fa60510ddd6962b51feae749d332ae53ea5267 SHA-256: 7487e345929fd8c3bf0da240c9a09458202ca528a96f55970c30a7bb04a81e7d
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection scheme. One prominent URL, 'https://ttraff.com/pify?keyword=bouncing+off+the+walls+phet+answer+key', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to a 'phet answer key', indicating a lure to encourage clicks. The presence of numerous links and a malicious redirector strongly suggests an attempt to lead users to malicious 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.com/pify?keyword=bouncing+off+the+walls+phet+answer+key
    • http://files.rebeccalindell.com/uploads/1/3/2/6/132695517/dagajaga.pdf
    • http://files.selectent.com/uploads/1/3/0/7/130776131/luzud-roxutisiw.pdf
    • http://files.nydiamondcenter.com/uploads/1/3/1/1/131163643/2398998.pdf
    • http://files.ikaruscoffee.co.nz/uploads/1/3/1/1/131163684/lotobaxoxogadik.pdf
    • http://loguz.hillandstump.com/uploads/1/3/0/7/130740026/foxowoma-kazujorek-xogivev-rolazatumafebin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/takipemo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/321946332.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/vinetira.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4524/files/18839172366.pdf
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/xegejaxip.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/wikiwod.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/41261564345.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/kotaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1864/1830/files/enlaces_covalentes_no_polares.pdf
    • https://cdn.shopify.com/s/files/1/0431/8363/6644/files/at_long_last_asap_sharebeast.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_off00004691.bin
cb3dd89c4e9143138e866f3d1d3caf7e1d8dc096befcccb1f56710c82289f844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4691 5584 bytes
font_01_sfnt_off000059ab.bin
cd2119d2151d9174eedc6a1c64b1bed19b0d5c569714103044ff5f78b1f5a2d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59AB 10180 bytes

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