Malicious PDF — malware analysis report

Static analysis result for SHA-256 78fe75e1b7d02eef…

MALICIOUS

PDF

42.3 KB Created: 2020-08-09 11:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e61233809031ee249a93ba61343034c SHA-1: 7e405a4f6c238b71c631f9df1144079f7fd2df23 SHA-256: 78fe75e1b7d02eef7598086e0d24734d4816b45bc6db89619c3eb6e09f298312
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the string 'Atrovent davis plus pdf' and the malicious URL, suggesting a lure to harvest credentials or redirect to further malicious content. The presence of a 'SE_MFA_LURE' heuristic firing further supports the credential harvesting motive.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=atrovent+davis+plus+pdf
    • http://kajoz.pigeoncovedesign.com/uploads/1/3/1/0/131070450/f782083625ac73.pdf
    • http://files.rootzmapleridge.com/uploads/1/3/0/9/130969624/7173880.pdf
    • http://files.bacmedicaltourism.com/uploads/1/3/2/6/132681587/xesezotatus.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/ruwoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/67444756878.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/75840545134.pdf
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/moxowudurolejubi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4819/6506/files/mendelssohn_wedding_march_organ.pdf
    • https://cdn.shopify.com/s/files/1/0431/2698/0770/files/fegojufudibewemus.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/maintenance_technician_resume.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/fortune_3_on_axe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6224/8095/files/xaditapivepibonuj.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_off000068f2.bin
83477f5416abf8369845260925b9c6d7b3539ae60c44486ebcd1b508e5a11638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F2 5084 bytes
font_01_sfnt_off00007a55.bin
8554c5d6efef3e0901e6ecfdc00893f5b40f1417dfcd561264ffe9be69bbdaee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A55 10120 bytes

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