Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5ec314a751ecee…

MALICIOUS

PDF

45.5 KB Created: 2020-08-24 17:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f8f2171acca9bb83842fb66817223d7 SHA-1: c8d0be38648afabc74f7ae62817c8a26187ed171 SHA-256: cc5ec314a751eceecbaf194c6c968d248572c10557587e7a7f8857c188c1cb9a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One prominent link, 'https://ttraff.com/pify?keyword=corporate+a4+brochure+templates+free', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify URLs, reinforcing the lure of free templates. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=corporate+a4+brochure+templates+free
    • http://files.contemplarichristi.com/uploads/1/3/1/4/131436980/wigoxemo_mevanulare_dolimolevafiru_butixebogagiset.pdf
    • http://files.gozamurai.com/uploads/1/3/1/0/131070207/luvowudupo.pdf
    • http://files.smartonlinebookkeeping.net/uploads/1/3/0/7/130738673/zarulexurimejurofug.pdf
    • http://jodaxiw.impulsivelust.com/uploads/1/3/0/8/130814187/dereruna-gesemikevuwo-nevoz-vonomarono.pdf
    • https://cdn.shopify.com/s/files/1/0466/3371/3829/files/tosaletawisumizided.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/geguluxet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4614/1093/files/55748073870.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9461/files/85034390760.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/butter_bob_briggs_wikipedia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/rakovorisajijikotofore.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/26400679143.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/80584506683.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/70834956392.pdf
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/43138862542.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/85170720266.pdf
    • https://cdn.shopify.com/s/files/1/0437/2303/0693/files/dialectic_of_enlightenment.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_off00006733.bin
4777cd235e6ef9792c29efa4b35ad9ccd8e853ad574ee6aaee52f04607d99c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 5236 bytes
font_01_sfnt_off00007907.bin
c38d68c7475312749ffd4d0c1cc48e91f5b4790b4a5618dac08cbb48f3efbc4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7907 9856 bytes
font_02_sfnt_off00009a78.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A78 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.