Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b1c25c7ad67bba5…

MALICIOUS

PDF

50.6 KB Created: 2020-08-11 07:12:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 543d03e8f98a3c36d3c06c3523adb0a0 SHA-1: b1091fa393b36642aaef141ec44bc5c8521ee911 SHA-256: 8b1c25c7ad67bba53557926d72bccaccc9f981ca0d1d67080f4195fe11925211
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'Catalogo natura ciclo 9 2020 pdf'. This suggests the document is designed to trick users into clicking the malicious link, likely for phishing or to download further malware. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy.

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=catalogo+natura+ciclo+9+2020+pdf
    • http://files.phnompenhtattoo.com/uploads/1/3/1/3/131379663/6058817.pdf
    • http://files.bvmusicboosters.org/uploads/1/3/1/4/131483445/sumogor.pdf
    • http://files.veeradonuts.com/uploads/1/3/2/6/132683259/viropawogaluraw-pepewis.pdf
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/vesawalejilotanamafat.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4906/files/definition_of_numerical_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/nomekixowitize.pdf
    • https://cdn.shopify.com/s/files/1/0434/2310/5175/files/45484365141.pdf
    • https://cdn.shopify.com/s/files/1/0438/6547/3189/files/nekifujimuviz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/star_vs_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/48828737127.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0902/files/calendering_process_for_rubber.pdf
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/sazaji.pdf
    • https://cdn.shopify.com/s/files/1/0438/1681/2706/files/38633960042.pdf
    • https://cdn.shopify.com/s/files/1/0435/2039/3380/files/history_of_banking_system_in_nigeria.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061fd.bin
1520a77e92c3acc0f7029d94523c71fd7bf48db0b3ad2a428aa2ddeba449d46b
pdf-font-stream PDF embedded font (sfnt) at offset 0x61FD 5360 bytes
font_01_sfnt_off00007440.bin
17eaa88295917c3c3fa4a014064b0767fe85069949a542e5fea1ab6506f2abe7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7440 11344 bytes
font_02_sfnt_off0000999a.bin
21d2c517cc0d2781f643886744ab2248bbe8d92ed1ab736cc2ad748918d5c6f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x999A 16296 bytes
font_03_sfnt_off0000af18.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF18 4324 bytes