Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab9efa0de1c17e5…

MALICIOUS

PDF

58.3 KB Created: 2020-08-04 00:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccc835dc3cab2aeb7518d5b1736befb4 SHA-1: 4e41832b396143a2c905109ea6aefa98d7ceb325 SHA-256: bab9efa0de1c17e55d9a6cc46672cb933b4aab9952df56f7b80a3bd9f87ea76a
180 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as a tutorial. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=apigee+tutorial+pdf', which is flagged as a malicious redirector. Additionally, the PDF includes a large number of links to external PDFs hosted on cdn.shopify.com, suggesting a link farm or SEO manipulation tactic. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to solicit sensitive information.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=apigee+tutorial+pdf
    • http://files.artbrit.com/uploads/1/3/1/0/131069987/7e1f5.pdf
    • http://files.lovinahouse.com/uploads/1/3/2/6/132681488/fonanozumixanuleb.pdf
    • http://files.castlewoodcustomhomes.com/uploads/1/3/2/6/132696500/remabure.pdf
    • http://gudev.directinservicetraining.com/uploads/1/3/0/8/130874431/772184.pdf
    • http://files.katherinelowings.com/uploads/1/3/1/4/131452815/witulatanuvodosafura.pdf
    • https://cdn.shopify.com/s/files/1/0433/6753/0655/files/nimiremimaletewuxemanumir.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/fufelinufadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34680977850.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/42241138322.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/44278837595.pdf
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/tamil_blu_ray_movie.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/5880132886.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/33273655144.pdf
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/stacked_countplot_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/miresewi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/tudodunobaruxinujabape.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/xepubejorafig.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/72358011313.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_off00009a6c.bin
eb71554194694dc66bb19d40b4981629ecf649bdd738a4ecebe61ca08cdae39f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A6C 5020 bytes
font_01_sfnt_off0000ab93.bin
d0051d33e167a2940f6e57cc538d0cedffd68a36ba54b876a12181830a4c75e4
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB93 15224 bytes