Malicious PDF — malware analysis report

Static analysis result for SHA-256 b134e7222f72bcf7…

MALICIOUS

PDF

41.8 KB Created: 2020-08-10 21:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3a00c20a7a234726e0ba6aa97be2aeb SHA-1: 75f90c5be0a43405d652034eba8d2964938eb55d SHA-256: b134e7222f72bcf7548201cacfc7b4f8bc0f6da2e98975af7142b2e12b090d02
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about 'electronic access control'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many pointing to Shopify, likely to manipulate search engine results and obscure the malicious destination. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=electronic+access+control+2nd+edition+pdf
    • http://files.wcchakrahealing.com/uploads/1/3/1/3/131381374/8786177.pdf
    • http://lebaregik.isocandles.com/uploads/1/3/1/8/131871674/mugivijararogewe.pdf
    • http://files.capitalmetal.com/uploads/1/3/0/8/130813888/fuviw_siwixip_fuwukodopor_diturubutexume.pdf
    • http://files.ljubaavvakumova.com/uploads/1/3/0/7/130776875/movozabamefadi.pdf
    • http://badirada.jackandbuenafoundation.org/uploads/1/3/1/3/131398560/3c03173.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/55820580827.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/dakivizimezemetu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/types_of_budget_in_management_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/28962408172.pdf
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/75940679334.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/bukuve.pdf
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/bapofevi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/fuvox.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/44693457433.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9320/files/1426363355.pdf
    • https://cdn.shopify.com/s/files/1/0448/0273/6279/files/difference_between_early_vedic_period_and_later_vedic_period.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_off000064be.bin
7bd7118b48467e5e18cce6dd0c5e2ee7119acbbc8dd0c32d029d4f9fcdb432ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x64BE 5236 bytes
font_01_sfnt_off00007698.bin
7bb12387da56959b94b877b0b55fd36c8823f3324a78f06107fdac4216672dda
pdf-font-stream PDF embedded font (sfnt) at offset 0x7698 10188 bytes