Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc241473e16254e…

MALICIOUS

PDF

44.9 KB Created: 2020-08-31 10:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34231711732d3eef6a1aae405ce7e3ea SHA-1: 1e4b180ee1539a5ceb4d5fd611a727968037b15f SHA-256: ffc241473e16254e9cf73223fa0bd604bcad6bd237dd268de2677c196ee5134f
152 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a mass of external links, including one to a known malicious redirector at 'https://ttraff.cc/wix?keyword=manual+hand+mixer+non-electric'. This suggests the document's primary purpose is to lure users to malicious websites. No scripts were extracted from this sample.

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.cc/wix?keyword=manual+hand+mixer+non-electric
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/fozusukepenevas.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/swot_of_coca_cola.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/laminator_sheets_a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9a201ea9e9b486cbd7d8926f9c12019.pdf
    • https://static.usrfiles.com/ugd/529dbf_3577e43c951b4a2a84987c996678c5b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_6919ffb555e6458f9eca6a2dadef92d9.pdf
    • https://static.usrfiles.com/ugd/de65f7_7343eb92ed8d43579ad56e5116924f7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a84e3cf8b1843ffa0db26a71b05c1a8.pdf
    • https://static.usrfiles.com/ugd/5a1791_b56cfc5d62fa425882dc26dafdf808df.pdf
    • https://static.usrfiles.com/ugd/b8c837_92d2526c93cb496e9193eaea4a828be4.pdf
    • https://cdn.shopify.com/s/files/1/0438/3863/6192/files/putonobagemimazezogil.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/5261177222.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_off000064a9.bin
5f2dd8698fc4447a096c5da024a334e66a850754d683f663ce9338641ece5884
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A9 4988 bytes
font_01_sfnt_off0000756f.bin
f88c9a55cf91dbcac1b4dc6a883b8ff2f06670f23e8d91882a01b495ca81de5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x756F 10376 bytes
font_02_sfnt_off00009902.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9902 4324 bytes