Malicious PDF — malware analysis report

Static analysis result for SHA-256 115f69fc983c193d…

MALICIOUS

PDF

69.6 KB Created: 2020-07-15 19:26:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a20e918b30b9705a3762573d53ee5ea7 SHA-1: 938fd456b761679e166171281a3aaded9d3a0a4b SHA-256: 115f69fc983c193d1d198bad992f1d558fd4b01536eefaf5fdd82bcbd6ab2229
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links pointing to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document's content appears to be a lure, disguised as a technical PDF, to encourage clicks on these malicious links. The ML classifier strongly supports the malicious nature of this PDF.

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=transient+conduction+heat+transfer+pdf
    • http://files.nisha-alberti.com/uploads/1/3/1/6/131637168/rugesafef-sagemif-jevixukubugisij-xusogoturo.pdf
    • http://files.nightowldesignsandvinylsupplies.com/uploads/1/3/2/8/132816042/bejugamo.pdf
    • http://files.electaylin.com/uploads/1/3/2/7/132740320/8322645.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3265/8588/files/91460360057.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/35819234836.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24810932871.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/jilapalamegigopexesukulag.pdf
    • https://jerurig.files.wordpress.com/2020/06/biroduzelosusigubajub.pdf
    • https://rotapofex.files.wordpress.com/2020/07/rotuvu.pdf
    • https://wamikuxun.files.wordpress.com/2020/06/digetipiwunowige.pdf
    • https://natazilanufa.files.wordpress.com/2020/07/30107645859.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/16656951113.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/86287643547.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21617342462.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/8290778449.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mukevomisuso.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b60c.bin
6b3be892f3e9e262b4b4946716cb49838e54a5e90f3ebcbc472a47a43b7d544f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB60C 5040 bytes
font_01_sfnt_off0000c71a.bin
aff045554abae944748319c543ce7bce9c4fd6d54b311f64d542034fb8138e61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC71A 13660 bytes
font_02_sfnt_off0000f2fa.bin
c0601303e089079b680ce3fb180a983f7cebefe812fad483186ddf7647d1db81		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FA 16224 bytes

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