Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30465b2f3336bbf…

MALICIOUS

PDF

47.9 KB Created: 2020-08-28 04:25:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12cbdf89ef1632a22fdb1befc71b8742 SHA-1: 43772a66627449d78bf040a2ed3156c2643d11aa SHA-256: d30465b2f3336bbf18935717ea0bc1f942fcb22c5de0eaa317ab27a1c487a0f9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=gtd+workflow+pdf' which is linked to malicious redirector infrastructure. The presence of numerous links, many hosted on cdn.shopify.com, suggests a link farm designed to distribute malicious content or phish users. 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.com/pify?keyword=gtd+workflow+pdf
    • http://files.utahmasonrycouncil.org/uploads/1/3/1/6/131636808/jilerewuligokazav.pdf
    • http://pogezubes.therekindlefoundation.com/uploads/1/3/1/8/131856666/d9492cb.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/jabof.pdf
    • https://cdn.shopify.com/s/files/1/0439/3077/9816/files/vawamipamuxizenavewolafuk.pdf
    • https://cdn.shopify.com/s/files/1/0445/6457/8463/files/chava_kadambari_full.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/tosuperetesixu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54101174921.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/nepefipojefozivin.pdf
    • https://cdn.shopify.com/s/files/1/0457/8974/1222/files/28791722489.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/nubulesesirebilus.pdf
    • https://cdn.shopify.com/s/files/1/0434/4745/1798/files/cmake_add_custom_command_example.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/57080869150.pdf
    • https://cdn.shopify.com/s/files/1/0434/1877/9815/files/15296546124.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_off00007fd8.bin
f05e644fdacd25a45e65e32da14d0516acd6080754c70ff2e9f2a5399350cf03
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD8 4832 bytes
font_01_sfnt_off00009077.bin
71c84d0c7f66e43786537e461dbd67fdf11eb2cc5f7b6b188228d9b1e551c763
pdf-font-stream PDF embedded font (sfnt) at offset 0x9077 10220 bytes