Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e2178730619e26…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 03:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa369ee6f6b24d9ea68814305f6e41c7 SHA-1: 77b0b51b97e78d7ec52bd8816b0339a36d91e175 SHA-256: 86e2178730619e266cf4d816519a008fd66ff71c934835f02f50c282f6e75459
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'real ielts listening test pdf' and a URL that appears to be a lure. This URL redirects to a malicious domain, indicating a phishing or redirection attempt. The presence of a visual download button further supports the lure-based attack pattern.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=real+ielts+listening+test+pdf
    • http://files.adenta.com/uploads/1/3/1/3/131380343/bulasafukojozoxa.pdf
    • http://files.imagecode.org/uploads/1/3/1/4/131453133/14f35acb0.pdf
    • http://files.queenstreetartschool.co.uk/uploads/1/3/2/3/132303329/kekugibeboni_xikugi_sezevivibamilu_getilon.pdf
    • https://cdn.shopify.com/s/files/1/0433/4007/1070/files/5266064958.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/67639030304.pdf
    • https://cdn.shopify.com/s/files/1/0434/8723/2166/files/pimobutinexomabakeloli.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/cadillac_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/96468566137.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/niboj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/fatuwojutaledodure.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/gewerom.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/niwefexunadujavopugujufa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000586c.bin
022378f307b623d581b0cfa36afd055c8c3580a0a068017949b13483c4940c90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586C 5120 bytes
font_01_sfnt_off000069f8.bin
e6e1f22fbc1b63c93dd2f374ab0078eb26e7909984e86f0cf3edb643b7689e6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F8 9932 bytes
font_02_sfnt_off00008c29.bin
b8fa99db91b4e2a38fb01ca4f8dfd1970d271bfdaf7323161a8b02e369b8fc98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C29 16120 bytes

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