Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19b519c8177b077…

MALICIOUS

PDF

35.3 KB Created: 2020-08-18 18:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 030afcacb01e4cddcce236e479ba3e8b SHA-1: f949dd5ddab5183558f7c56ab5a051d41caf8ff1 SHA-256: c19b519c8177b07744cf783e60487b018c892b0fe569e8abb0e6a0f8373deddd
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a URL containing a search query for 'alien shooter 3d android apk net lizard'. This suggests a phishing or scam attempt, likely aiming to trick users into downloading malware or visiting further malicious sites. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to various external resources, many of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious.

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=alien+shooter+3d+android+apk+net+lizard
    • http://files.inserviceeng.com/uploads/1/3/0/8/130813906/7235564.pdf
    • http://matapilif.golfswingtipsblog.com/uploads/1/3/0/7/130775085/tixaju.pdf
    • http://files.illlaladesigns.com/uploads/1/3/1/4/131437778/1a7421b57be3.pdf
    • http://nolom.shopscarletgypsies.com/uploads/1/3/0/7/130776485/kazelakik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/aegle_marmelos_medicinal_uses.pdf
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/gipuriguwogomibirawenuzep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/pagafevorilevujixozewu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6464/files/46946541762.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/marshall_mathers_lp_zip.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/what_is_an_example_of_sublimation.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6149/files/tosujizakizezim.pdf
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/51988131122.pdf
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/laptop_acer_aspire_e14_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/derivative_of_trigonometric_functions_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lafiku.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_off00004c7b.bin
6f4c2b0e7d4b2a11a85289a5e0c16cc7ddbb6528d3867bacccb2ec59f72512b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7B 5316 bytes
font_01_sfnt_off00005e86.bin
bf69b3fdefc4894464faa2de5c086b26f18f59e9953b8aa83c26bc8f7ef9237a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E86 9852 bytes

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