Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a17e20c8bc319c…

MALICIOUS

PDF

53.3 KB Created: 2020-08-08 14:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 224a601b6e0d661c36097ac30c16871b SHA-1: f5d3f0b5eb7e3b32e944e9f014df95bec1f67664 SHA-256: a0a17e20c8bc319c20a0e0a6e5d18d50282cf3b1bed5cc9a88562cea79fb2024
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=the+philadelphia+chromosome+book+pdf`. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, with `https://cdn.shopify.com/s/files/1/0440/7217/3733/files/pudunudizeniwa.pdf` being a prominent example. The document body also contains the same malicious URL, reinforcing the lure to click on external links. The ML classifier strongly flags 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.cc/pify?keyword=the+philadelphia+chromosome+book+pdf
    • http://files.oberonmassage.com/uploads/1/3/1/4/131408203/bubizes_jalud_busabob_terebutozojo.pdf
    • http://files.ibstonecircle.co.uk/uploads/1/3/2/6/132682976/e55a22bf8b1.pdf
    • http://files.yourdfwattorney.com/uploads/1/3/1/4/131453076/4280117.pdf
    • http://files.septictankpumpinggwinett.com/uploads/1/3/0/7/130738622/e6631b4bc964d8.pdf
    • http://files.wituz.com/uploads/1/3/0/9/130969742/wugasabuvuleg_fonojibez_zebig_disevewezede.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/pudunudizeniwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/carrier_air_conditioner_error_codes.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/4496381117.pdf
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/zimepoxop.pdf
    • https://cdn.shopify.com/s/files/1/0434/8706/8322/files/49378725118.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/jawowaluzabikin.pdf
    • https://cdn.shopify.com/s/files/1/0448/6037/5201/files/briggs_and_stratton_parts_by_serial_number.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/budaya_patriarki_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4408/files/salewa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/wapowekofipi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/90599650707.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_off00009271.bin
ece73923b331878d2772f2e21cb2584c7d50eefad35beb864a38b26d3ee28be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9271 5548 bytes
font_01_sfnt_off0000a51f.bin
486026e3bad17ae48d1b11ad70dc63b5b2fa35089b6672160678630319de3d51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA51F 10332 bytes

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