Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1beeb3afb28cf9…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 03:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba051497425104a5ca6f78859738ccf2 SHA-1: e780eb5f93cd0ad66bac20f75c2d45b517c25e84 SHA-256: aa1beeb3afb28cf94ab4ac3c40ee1c00fb4e9a56450cfa45a89d5a6c5ad3301f
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating an attempt to lure users to malicious content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.com/pify?keyword=adelicia+script+free+font as malicious. The presence of a 'download button' lure further supports this attack pattern. The document body contains garbled text but includes the primary malicious URL and a secondary URL from a link farm.

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=adelicia+script+free+font
    • http://files.high5communicationresources.com/uploads/1/3/1/4/131406537/6fbcc6d24052.pdf
    • http://files.thechildrensvillage.net/uploads/1/3/2/7/132712015/2399813.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/15133360807.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6863/files/12528069500.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/6385502839.pdf
    • https://cdn.shopify.com/s/files/1/0437/7736/0029/files/1910_constitution_of_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/rugude.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/67191636942.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/have_you_ever_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/cancer_de_piel_en_costa_rica.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/1000/files/www._prepaidrewardscenter._com_visa_card_activation.pdf
    • https://cdn.shopify.com/s/files/1/0435/4211/8555/files/wow_classic_hunter_macros.pdf
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/tifadipuvudasom.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/75139485995.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_off0000555c.bin
7bfcf57f79587a98ea0e0c9712bd5c460b0e1555ef9107e0c47262360dbec8b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x555C 5140 bytes
font_01_sfnt_off000066e0.bin
d80ab5d71d4cfd23dae543e0cd2f709d5d961a34b23a905277401a48171921e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E0 10708 bytes
font_02_sfnt_off00008aff.bin
fb27248ec02d804caa0ce6a8dd06a8f0f211157336bc50f6c382585ff5fe3da3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFF 16084 bytes