Malicious PDF — malware analysis report

Static analysis result for SHA-256 192473a09e81e46a…

MALICIOUS

PDF

47.5 KB Created: 2020-09-02 07:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86718e62bca8f2cbe58a943324674150 SHA-1: bd466f921e130a83db671b4dc01867b549d9a534 SHA-256: 192473a09e81e46aedc7ed200c873792a271dfd13eea8bbe335e0c1e44466ab0
162 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a download for Adobe Flash Player. This, combined with the heuristic firing for a visual download button, strongly suggests a phishing attempt to trick the user into downloading malware. The ML classifier also flagged this PDF with high confidence.

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.com/wix?keyword=adobe+flash+player+32+npapi++offline
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/61234037635.pdf
    • https://cdn.shopify.com/s/files/1/0438/9529/2059/files/mujinoroziles.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/monivegozafef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22411539251.pdf
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/44154621864.pdf
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/bachna_ae_haseeno_movie_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9814/files/anfotericina_b_bula.pdf
    • https://static.usrfiles.com/ugd/15cd4d_db2fa8229cfe4a7c9a4d64823165f600.pdf
    • https://static.usrfiles.com/ugd/868f76_4af269f195314ae5b053c1cac3522a7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b51795bc29d74f6b85257fac066f8e03.pdf
    • https://static.usrfiles.com/ugd/3649d2_4e446b0db80a46f9a808412bd1954b84.pdf
    • https://static.usrfiles.com/ugd/a43ec6_d582936145cd4b61a461c7edb32d5a00.pdf
    • https://static.usrfiles.com/ugd/c6ac46_c764f41a0d8f4216b9abafedffce57cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_a409acdc255f47debc86f2cbc47a36cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_dca248b2fdd34075aa563d43fe792528.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_off00007561.bin
4506bf448b4a8b51c0ebde5421211c82817eb4c1fea715c4ec8bddd77348c971		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7561 5656 bytes
font_01_sfnt_off00008898.bin
236c37520d2f5f2c3e1ad5d9b7f065638405c8a3e9d7a205c698d763c09c5be6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8898 12800 bytes

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