Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf7512d0664ce15…

MALICIOUS

PDF

46.2 KB Created: 2020-08-24 10:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4646a5ee001a0b65bb1e3abf43365b5 SHA-1: dc0e982aaee9741fd5f0a58d1c8eb6fb76661fd3 SHA-256: eaf7512d0664ce1537923fce588573415d258d9b54257a763938a63cdd1828cc
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is used to deliver the payload. The document body also contains a call-to-action phrase and a URL that appears to be related to downloading an APK, suggesting a lure for users seeking specific applications. The presence of a PDF link farm further indicates an attempt to distribute malicious content.

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=cinema+hd+apk+latest+version+2019
    • http://files.blues-city-kids.com/uploads/1/3/0/9/130969879/27a11e1fd0c82.pdf
    • https://cdn.shopify.com/s/files/1/0429/7116/8931/files/66265663414.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7013/files/an_introduction_to_environmental_biophysics.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/budesonide_and_formoterol_fumarate.pdf
    • https://cdn.shopify.com/s/files/1/0435/5611/0487/files/60924811254.pdf
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/68149671913.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/vikebakitu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4468/3432/files/xadinadalogemile.pdf
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/41118177711.pdf
    • https://cdn.shopify.com/s/files/1/0462/5763/5477/files/guidewire_jobs_in_chennai.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6326/files/wotesojofuvezekub.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/gefut.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_off00006876.bin
775c45857dd339b0ae1a53ec9a113ab6634dfc879e79a94a30c76a68f0a52af4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6876 5616 bytes
font_01_sfnt_off00007b5c.bin
c765dbc81f4de19d66c863258e88abaf0dc3be6caec0b17198e5aaa7f0826bb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5C 10220 bytes
font_02_sfnt_off00009e35.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E35 4324 bytes

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