Malicious PDF — malware analysis report

Static analysis result for SHA-256 74034b658f6cf31b…

MALICIOUS

PDF

41.2 KB Created: 2020-08-10 10:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34a22047d1acdc2ab60e71374d2d162d SHA-1: 5a730c14acc845e7658b1d21d436f43fbfe7dd64 SHA-256: 74034b658f6cf31b30509f534125a066794a6485b4b738939b925500dd3b4148
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary redirector URL, 'https://ttraff.cc/pify?keyword=shoulder+arthroscopy+portals+pdf', suggests a malicious intent to drive traffic through a link farm. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a malicious document, likely intended for traffic generation or to serve as a lure for further malicious activity.

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.cc/pify?keyword=shoulder+arthroscopy+portals+pdf
    • http://guxaneji.innerselfjourney.com/uploads/1/3/1/4/131406893/womolazisejadijujij.pdf
    • http://files.barnsandburleycandleco.com/uploads/1/3/2/6/132682042/jupofo-votate.pdf
    • http://files.eatavo.com/uploads/1/3/1/0/131070434/8106196.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/romakuzi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/futewiduzevonuxilak.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/17607301840.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/69376406844.pdf
    • https://cdn.shopify.com/s/files/1/0428/8777/4367/files/silobopewag.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/83813277085.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2524/files/gibovavanowawameliledaxaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/26196526315.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/gijadijuvexiwalur.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/3828261955.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_off00006364.bin
770dab8d7d60691843af9daa1c20ed2a40e6bc4404d48fe04acedb18a40ac559		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6364 5448 bytes
font_01_sfnt_off000075e8.bin
5f2e304db5b033f0e1dc91ab94114ee3f5d972f48704b47d185be703b4ed2e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 9980 bytes

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