Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97befdd3f0eb61c…

MALICIOUS

PDF

36.3 KB Created: 2020-08-19 09:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0cc63ce5145bd205cd33b9de2542880 SHA-1: e8e466331ec1d237686d46a05e0e55b8bcc4b72e SHA-256: e97befdd3f0eb61cdbaeff10108df6172d19208cb542bbb86f7e0a96b4b25858
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links pointing to a known malicious redirector. The document body contains obfuscated text and a URL that appears to be part of a link farm strategy, likely intended to lure users to malicious sites. The presence of a malicious redirector link is a strong indicator of malicious intent.

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.cc/pify?keyword=beast+mode+2+itunes
    • http://files.winneconnethriftgift.org/uploads/1/3/1/1/131163620/6862614.pdf
    • http://manev.bg-osteopaths.co.uk/uploads/1/3/2/7/132710601/likezab_mijurobawez_xesakelag_nufetaxalede.pdf
    • https://cdn.shopify.com/s/files/1/0444/2639/5814/files/tv_tropes_gargoyles.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0312/files/litakoditug.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/sojopasixugozonizijokexoj.pdf
    • https://cdn.shopify.com/s/files/1/0444/3861/8278/files/plural_form_of_word_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0440/8115/2152/files/html_skeleton_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/bodyweight_training_system.pdf
    • https://cdn.shopify.com/s/files/1/0434/5528/3350/files/26068935076.pdf
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/sozidivavuvasudusewaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/tajafubu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/antenatal_care_depkes.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_off00005129.bin
bd4904a964dc93d1de77a54a3fa6bde87c1501e4c9b22747d3850d9b94e22503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5129 5024 bytes
font_01_sfnt_off0000622a.bin
ccd528ce84870cdca43365a946319af16750ec70d0bbda4f8a4d4e80b0d6a0f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622A 10144 bytes

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