Malicious PDF — malware analysis report

Static analysis result for SHA-256 94022f454fac812c…

MALICIOUS

PDF

40.9 KB Created: 2020-09-05 02:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 432a7ccc8b96b650d8b8ec35e38374d7 SHA-1: 36afaa060377d28efda88b1593bb937ad343d97d SHA-256: 94022f454fac812c0f4c16c08797f966b9aa97cf0bd4ae0105e757ddc4e467c7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains embedded URLs that lead to a known malicious redirector, disguised as a county court claim form template. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and the ML_NYX_PDF_MALICIOUS flag strongly indicate malicious intent. The document body, though partially corrupted, contains the same lure and URLs, suggesting a phishing or scam attempt.

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.me/wix?keyword=county+court+claim+form+template In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/4d400c_7e9c4dd087744195a86a3aa9f4107913.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c6ac46_e36906ca312f421da6110165d0f92298.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/10b03a_eb2b2fab7c514eb3af4435645a37a61e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b42fd6_d69aba0454024d4589bbeca33701c735.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/33ab24_338ac30ad2d14fe4836e7ee5778ea43a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f4de5e_499fd7843c7d4c2499dd24696583385e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c068f8_ac297d02d5db43499dd885707e256ad0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/de02f3_68f41fb8e5444fa099949a38e4f463ba.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/229b11_23799d9120aa4f6ca3d9f9ffc8437e00.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3bf302_cc34f61e1fc74313808a7068427e7e7e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f103bb_1216fc8b4ba9486b991959e67f0b64f4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ea4d5_473a6c92b1f049da8be187033b34fb4b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fbccce_cebce76aaf454dc7a3d142da88cc2bc6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6464/6040/files/penukuwovekag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/poultry_feed_formulation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/digivajolodozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/gpu_benchmark_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AF 4988 bytes
SHA-256: aa9317188765851643d6b0ee4d31ffd6e8eb14cc6b6a97c2e3f3200c017f41fb
font_01_sfnt_off0000749e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 10028 bytes
SHA-256: 0d20c33718c4baceb419f2a624818fd0b8e7821d5631b42d1e42858c802aa29e

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