Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fb6947f968c915…

MALICIOUS

PDF

35.6 KB Created: 2020-07-12 02:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c681495f1a9641f0dbd4b55a46f845fd SHA-1: a1859ed460acb4c0dc5aa4830e2102adeb7de86e SHA-256: 32fb6947f968c915a61fd1fb42fedce720e4a07de4b4ab5e0e53bf4d5abf6a22
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document is classified as malicious due to its extensive use of link farms and a critical redirector link pointing to known malicious infrastructure. The document body, while appearing to be about concrete principles, contains a malicious URL that redirects to `https://ttraff.ru/wb?keyword=post%20tensioned%20concrete%20principles%20and%20practice%20pdf`. This indicates a likely attempt to lure users to a malicious site 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.ru/wb?keyword=post%20tensioned%20concrete%20principles%20and%20practice%20pdf
    • http://files.missionalcommunitycentral.com/uploads/1/3/2/7/132741144/a3db8f.pdf
    • http://files.shaktiflowyoga.com/uploads/1/3/0/9/130969089/tepaselasaxegel_dojolakuwi.pdf
    • http://files.rgengineers.com/uploads/1/3/1/3/131380598/9093235.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/degopo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/mofukip.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/kevaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/lijunanimulawudoxi.pdf
    • https://zimabofose.files.wordpress.com/2020/06/38669388510.pdf
    • https://bidumuweso.files.wordpress.com/2020/07/xelemixufigi.pdf
    • https://rurilaxun.files.wordpress.com/2020/06/bijemijezu.pdf
    • https://fuwejavogo.files.wordpress.com/2020/06/95973189891.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/40745026706.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/matofifabudetitifili.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/77513468423.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63016720996.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/59234929851.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/serananovuja.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/fiderezebut.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/1/0428/9314/8313/files/fiderezebut.p

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d47.bin
3f90dd27034db3fab4abdbacd3694ec649e43260bf7e5ddfa0716cbe13ee7414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D47 4940 bytes
font_01_sfnt_off00005e10.bin
5ecff6a1584523e51f215a76895885fec2e0b93bda4ff3092d6c736b78c51d26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E10 9640 bytes

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