Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69a39423aa81141…

MALICIOUS

PDF

42.5 KB Created: 2020-08-31 06:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2a4d24f8463730c83aa1f5e385a65f7 SHA-1: c018b0d82ef72f25f09d631bc97422163301fdb5 SHA-256: b69a39423aa811415ea407256ee338cf7894132226faa8e01d1e605a8ea3259c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily corrupted, contains text suggesting a lure for downloading software, specifically mentioning 'descargar geometry dash hackeado par'. This indicates a social engineering attempt to direct users to malicious infrastructure. The presence of a link farm heuristic further supports the malicious intent of distributing links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=descargar+geometry+dash+hackeado+par
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/ronelagemamozebutovil.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1014/files/63180520901.pdf
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/waleboxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/candyland_pc_game_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/15376700044.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4880/files/iim_indore_admission_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/80921237163.pdf
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/atos_dos_apstolos_ellen_white.pdf
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/84552571765.pdf
    • https://cdn.shopify.com/s/files/1/0447/4558/8887/files/affairs_cloud_current_affairs_january_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/pikizozejofog.pdf
    • https://cdn.shopify.com/s/files/1/0432/9114/8454/files/51557321612.pdf
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/aua_guideline_bladder_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/export_bookmarks_google_chrome_android.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a7ab4fa13ef4a3381c92a1aa9ddd512.pdf
    • https://static.usrfiles.com/ugd/e2b09b_22534972481e4b8c9070eb607623471c.pdf
    • https://static.usrfiles.com/ugd/d78803_7e382f38f9ed4264b6fbf1a30b5d9ab9.pdf
    • https://static.usrfiles.com/ugd/fef806_71a9a03b2f9d4215854b041fb2bda000.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066a5.bin
226b20ffd4d2bc5282c418fd2b01f44d5d46137a04e746a4a6d56cbf64edee70
pdf-font-stream PDF embedded font (sfnt) at offset 0x66A5 5620 bytes
font_01_sfnt_off000079a7.bin
11c029e0c65a108fc8414b8fd8ca639968edd1e5919ce70220dddd753ec46a27
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10268 bytes