Malicious PDF — malware analysis report

Static analysis result for SHA-256 5858852ca35987e9…

MALICIOUS

PDF

43.4 KB Created: 2020-08-25 15:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ae90eb0901e77b24ef11cd84b5aad51 SHA-1: 62396f230f43a3f856d906f04b723f7b9729b821 SHA-256: 5858852ca35987e92b985a755e7dc7b064de753d185948b6b450251a878f20d5
130 Risk Score

Malware Insights

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

The PDF contains a lure for 'Avs video converter apk for pc' and a call-to-action button. It embeds multiple links, with one identified as a malicious redirector pointing to ttraff.ru. This redirector is likely used to deliver a secondary payload or lead the user to a phishing site. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious links.

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.ru/pify?keyword=avs+video+converter+apk+for+pc
    • http://fogirizax.mitchadvent.com/uploads/1/3/1/6/131637046/tajujisokifa_gojedomobeke.pdf
    • http://files.cowgirlcoutureny.com/uploads/1/3/1/4/131437464/8c93845a8ef18.pdf
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/70714874724.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/array_copy_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/reasons_for_the_abolition_of_slave_trade.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/78173833902.pdf
    • https://cdn.shopify.com/s/files/1/0462/7254/4917/files/45603752066.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/book_review_example_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/22634791803.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/77904411812.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_off00005d4a.bin
3e08e434f1e4cbb417da9a5976485cb79d05d39dd468e1922a46fc74b9d0af04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4A 5228 bytes
font_01_sfnt_off00006f26.bin
686fdc93124af6a3af1d08da81f99ac7e6c4e68bfa473cda2edd8e515ef61341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 19372 bytes

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