Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5d4c530be818bc…

MALICIOUS

PDF

44.1 KB Created: 2020-09-04 21:25:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88cd6daa4529a7aaab6cfa5cd1c08db6 SHA-1: 564c8f33172a4ccb4172ae5f336f14db7716476c SHA-256: ed5d4c530be818bc9ba49bcf26deb1d05af2cc6d280ba10e4af56ff82b1835db
120 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 'https://ttraff.me/wix?keyword=hungry+dragon+mod+apk+2.+0'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external PDF links, with 'https://cdn.shopify.com/s/files/1/0429/3797/4950/files/97773318195.pdf' being the first identified. The document body, though heavily corrupted, contains references to the malicious URL and a seemingly unrelated file name, suggesting a lure to download potentially unwanted software or lead to further malicious sites.

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.me/wix?keyword=hungry+dragon+mod+apk+2.+0
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/97773318195.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8182/files/sominajoxipufem.pdf
    • https://cdn.shopify.com/s/files/1/0432/5828/2152/files/arterial_system_of_human_body.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/40190891584.pdf
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/jafofasagarotiredajebokun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zutowujovepenatugipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/mojin.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1616/files/43546290156.pdf
    • https://cdn.shopify.com/s/files/1/0429/4157/9420/files/34639763593.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/rupesovikanevu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1356/9690/files/amniocentesis_nice_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/99033764561.pdf
    • https://static.usrfiles.com/ugd/9374a7_979442ea695d454580e19e9a513edcb6.pdf
    • https://static.usrfiles.com/ugd/d6b5da_33c7cc03c63044a8b7504cbd9437d5f7.pdf
    • https://static.usrfiles.com/ugd/6846fe_ba1476f7648144378c86af8865ca4719.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_off00006ba6.bin
84936930dc2bc87d33bf006b6486e90dfd72ec3de9b007bc6dbcb8b9282dd4bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA6 5500 bytes
font_01_sfnt_off00007e59.bin
4246d4c09d70ab27f54517469a2d68a06cf148418f93a58f0eb6b39993bf64e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E59 10896 bytes