Malicious PDF — malware analysis report

Static analysis result for SHA-256 1de4ba51a23800ab…

MALICIOUS

PDF

39.8 KB Created: 2020-08-22 19:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722513e1189757df049cb6870a71540b SHA-1: 136cd2dd8c25a038e3cfb25a4a7bd7a85f777291 SHA-256: 1de4ba51a23800abd87c7bc7462ae344a7be6168cccdd4f94827fe9ca87ea6eb
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=concierto+de+aranjuez+music+sheet+pdf'. The document body also contains this URL, suggesting the intent is to trick the user into clicking the link under the guise of downloading a music sheet. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to PDF files.

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.com/pify?keyword=concierto+de+aranjuez+music+sheet+pdf
    • http://kotija.acct301.ehabacademy.com/uploads/1/3/0/8/130813714/bupolo.pdf
    • http://fepabaj.rossmiller.co/uploads/1/3/0/8/130813821/2683715.pdf
    • http://nobaraf.sassafrassugaringstudio.com/uploads/1/3/0/8/130814328/7f663a05a768a.pdf
    • http://files.gumsaan.com/uploads/1/3/2/6/132681409/xokixuvuketawed-sosafolapedigel.pdf
    • http://vulifu.thequiltingretreat.com/uploads/1/3/1/3/131380600/miwisozakojabadujon.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/78834091201.pdf
    • https://cdn.shopify.com/s/files/1/0429/3866/3079/files/99443821572.pdf
    • https://cdn.shopify.com/s/files/1/0432/3999/7595/files/84545250061.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/7292508391.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/zetebufilajunakade.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/wusatomo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/9388314432.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6649/files/64958052162.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/videoder_and_install.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2054/files/can_the_human_eye_see_4k_resolution.pdf
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/es_file_manager_pro_apk_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/sassouni_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/nelajutasogavovuvarama.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_off00005fd9.bin
bc01f9bde9b0db164dd35c36a201a1d00b05a5fb4e14eb6463d775b46fef2dee
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD9 5396 bytes
font_01_sfnt_off0000720a.bin
cd1d05a64a9adc3b4c189a95e94acca9d03a9cc0f7c140641f97f9d052d47473
pdf-font-stream PDF embedded font (sfnt) at offset 0x720A 9304 bytes