Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0f01e1f653ae1f…

MALICIOUS

PDF

51.0 KB Created: 2020-07-09 06:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5dd09239e750a444f381124d3fb29ae SHA-1: 07ad6b78fa13dac42c4294c891f618035e48e5b4 SHA-256: 9e0f01e1f653ae1f14f98b878eb7431abfff29ec7cb6c2bd97028e77646ef869
154 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 a link farm designed to manipulate search engine results. One prominent link redirects to a malicious domain, ttraff.com, which is flagged for malicious activity. The document body, though partially corrupted, contains text related to a book download lure, reinforcing the malicious redirection. The primary intent appears to be directing users to malicious infrastructure through deceptive content.

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/wb?keyword=lanka
    • http://files.aussieconservative.com/uploads/1/3/0/7/130740401/tixozijepa_fidagab_wokajexifivowed.pdf
    • http://files.magisterseniusu.com/uploads/1/3/1/4/131437233/6240549.pdf
    • http://files.orangehistory.org/uploads/1/3/1/3/131380998/6a7d3c8e67aa6.pdf
    • http://files.sippicanchoralsociety.org/uploads/1/3/0/7/130739375/840a4e.pdf
    • http://files.juliettemccullough.com/uploads/1/3/1/4/131437636/tinenugaje-ruperisusuwi-ruvapuwuv.pdf
    • http://files.josephmbrown.com/uploads/1/3/1/1/131163564/8795215.pdf
    • http://files.moralehemp.com/uploads/1/3/0/9/130969938/wexel-lipasowuperopo-pupinamu-sakuvaresedu.pdf
    • http://files.finalfinishdetailing.com/uploads/1/3/2/7/132710655/levin_linebedanelu_vidaki_vukadidi.pdf
    • http://files.yvonneblack.com/uploads/1/3/1/1/131163564/235522.pdf
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdf
    • https://busamonavek.files.wordpress.com/2020/06/75619587931.pdf
    • https://sividad.files.wordpress.com/2020/06/borilokapig.pdf
    • https://lajugidu.files.wordpress.com/2020/06/dirinotafozorotawu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079c7.bin
0ec18d357893df1ad8d68c657073f2bee9c0d60421fe400b3b58cf7ae1021863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C7 5128 bytes
font_01_sfnt_off00008b47.bin
af7588d4ea710f73e99135f11c46b792889b6d85f2d1b1ba024b060f7caa9825		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B47 10316 bytes
font_02_sfnt_off0000aea5.bin
6d2b6e4ecf750d6223c36d903e1b607d6f1620bf06735dd463544759b39bca5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEA5 3696 bytes

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