Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d3576806cb37c0f…

MALICIOUS

PDF

36.1 KB Created: 2020-08-25 06:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bdcec3feccb507f9e5feea7dce66703 SHA-1: 54bf239b1a0d6defd7f3df301357906441b8c238 SHA-256: 1d3576806cb37c0fe8a0a7ddd36de550252278b29976d51ea35b47843b980388
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for a download. No scripts were extracted from this sample.

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=kathi+theme+song++masstamilan
    • http://files.houghathleticboosterclub.org/uploads/1/3/0/9/130969981/ledule-pasizotuximo-penosuvabo-weripuforutalu.pdf
    • http://zaniwowen.radiantearthling.com/uploads/1/3/2/6/132696212/8210096.pdf
    • http://vufezok.thestyleofsubstance.com/uploads/1/3/1/0/131071047/zopinupidafupop.pdf
    • http://files.hickmanfootball.com/uploads/1/3/0/7/130776788/kamubumul-dobozokowobiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/1608/4891/files/healing_back_pain_the_mind_body_connection_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/52135678793.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/ligeramente_casados_mary_balogh_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0430/1773/2259/files/simazisedi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9054/1728/files/esc_guideline_valvular_heart_disease_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/24927543946.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/linux_commands_with_examples_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6444/9431/files/46212349125.pdf
    • https://cdn.shopify.com/s/files/1/0435/6905/3854/files/gejevazugigimidipuvuza.pdf
    • https://cdn.shopify.com/s/files/1/0438/6747/2037/files/4259384459.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8357/files/tilarepimivufulabadike.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5759/files/caia_level_2.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_off00005227.bin
83c608649e3f2f5656502b851e32e38799a2fe89e8310c71490bb486ad9c8615
pdf-font-stream PDF embedded font (sfnt) at offset 0x5227 4972 bytes
font_01_sfnt_off000062f7.bin
a2c0a634aae121370abdfab500f4a8a742f680ff9612f5cf2bc80abdc42b3fa6
pdf-font-stream PDF embedded font (sfnt) at offset 0x62F7 9568 bytes