Malicious PDF — malware analysis report

Static analysis result for SHA-256 58b9e0abcd9269a5…

MALICIOUS

PDF

45.1 KB Created: 2020-08-14 01:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e1c7001ad075e1116fc8b95a8a865a3 SHA-1: 38ac469c2eb2a68423ac3ecc857289e5dcbfb9d9 SHA-256: 58b9e0abcd9269a542e613ed512a7ef67fe3b869a70dbbe1c79f877b12690da9
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to lure users to a potentially harmful website. The document body, though heavily obfuscated, contains the malicious URL. The presence of a PDF link farm further suggests a malicious intent to distribute 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.com/pify?keyword=calligraphy+practice+sheets+blank
    • http://files.sydneyhasasister.com/uploads/1/3/2/7/132740743/fanujemoluxugozu.pdf
    • http://vutusa.summitmartialartsacademy.com/uploads/1/3/1/3/131379591/lufubomen.pdf
    • http://files.christopherlauto.com/uploads/1/3/1/4/131483214/jinubodilolokuz.pdf
    • http://files.nfovf.org/uploads/1/3/2/7/132712115/8548188.pdf
    • http://fowusixo.landsendmarinainc.com/uploads/1/3/0/8/130814328/budarura-tukajowesewavex-befikulij-wexasid.pdf
    • https://cdn.shopify.com/s/files/1/0441/1329/7560/files/52895831365.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/aerobic_and_anaerobic_process_in_wastewater_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0437/4819/6513/files/david_baldacci_movies.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/phytochemical_test_for_alkaloids.pdf
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/71946943614.pdf
    • https://cdn.shopify.com/s/files/1/0432/0621/3789/files/array_c_programs.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/wifadafaviwigexawetitape.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8986/files/divas.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/thailand_logistics_report_2018.pdf
    • https://cdn.shopify.com/s/files/1/0439/4146/2174/files/arthashastra_book_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2231/7728/files/ganenubarinonedep.pdf
    • https://cdn.shopify.com/s/files/1/0433/5996/1239/files/62698745379.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/18351656043.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_off00005e46.bin
813adbcffc31f78b770ae03ba1e345f5ea647858876ae67a894c424ad39366a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E46 5408 bytes
font_01_sfnt_off000070a4.bin
3379da3ae803f4350f439f5e77f481b8091428905294095c0d4ee5e3281a5148
pdf-font-stream PDF embedded font (sfnt) at offset 0x70A4 9760 bytes
font_02_sfnt_off00009230.bin
b6b4a8d5f4f3f91eddb7a1d6191dbf181db8ea9dc6a65dc5bc068d06c7e78db3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9230 16120 bytes