Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e54056cdcd38bc…

MALICIOUS

PDF

48.5 KB Created: 2020-08-12 02:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 859371f91b19adf2c33336505bc54382 SHA-1: a3ee95487a765434967ae369bd86baa917cf283c SHA-256: 53e54056cdcd38bc1bdf6dde5e103b5b65038d1a298b1cc1c6cda03819fddad7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is ttraff.ru, which is known for redirecting users to further malicious content. The document body itself contains garbled text but includes the malicious URL, suggesting it's part of a lure to trick users into clicking the links.

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=bibliotecas+virtuales+pdf+gratis
    • http://zubipefip.alkhomassia.com/uploads/1/3/0/7/130775971/wesepemisigur.pdf
    • http://files.ucsd-stahr.com/uploads/1/3/0/7/130775607/fanofusus-napodawerej-butadaberuga.pdf
    • http://files.fosteringsuccessllc.com/uploads/1/3/2/7/132712080/solemomasusod_mitofuxiw_punino_mepasidaf.pdf
    • http://bezuzogan.toolbeltoflearning.com/uploads/1/3/0/7/130739415/roranol.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/mcd_to_lumens.pdf
    • https://cdn.shopify.com/s/files/1/0449/6615/0303/files/new_cutting_edge_upper_intermediate_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4457/files/batozasavujaxifutererojo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1969/6290/files/72422465789.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/wugosuwelesejoguz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5882/2296/files/wulebatusiperejomusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/japam.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/46962023011.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1177/files/destination_a1.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/nexutagelijage.pdf
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/burebawajutumawiverape.pdf
    • https://cdn.shopify.com/s/files/1/0432/5169/5771/files/44078725141.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_off00007125.bin
8e4ecba400407465dc82875fd27f43703d90c216deac2ddbe04b127a2a892306
pdf-font-stream PDF embedded font (sfnt) at offset 0x7125 5348 bytes
font_01_sfnt_off00008365.bin
1e0193d690e3842eacefc2f3e2a759ef258298ffa1211f02af236012d8de4c21
pdf-font-stream PDF embedded font (sfnt) at offset 0x8365 10744 bytes
font_02_sfnt_off0000a6a5.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A5 4324 bytes