Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d4615549fc730e…

MALICIOUS

PDF

40.9 KB Created: 2020-09-07 17:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ed10330dfe13737a88c353f635d6413f SHA-1: c7ee7af4ee666735651c8470e52a0dbcdcd466fc SHA-256: 54d4615549fc730e48de655cd6c29906fd2dacaf53cbc6c890c49d0366143da0
154 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL and a list of other PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

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=la+tecnolog%25C3%25ADa+inform%25C3%25A1tica.+funciones+ventajas+y+desventajas 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/f8de3e_7cddb5adca6b4688a9dc17c84da08626.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a640e9_85281d2d2f40425aaa21e7eef112b81f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0c8cc8_4037487bcf67427497ba2e5767e140cb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e73fea_4497ed6e16ec4937a5b53e0b3c197088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9843/8820/files/gta_vice_city_ggmm_indir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/bejemevuronifob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4938/5126/files/58141504808.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6df952_04baef14ec794cd18150746ce68bee42.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/77eba6_b7072f51047b425a91dc7fe303fc44e9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/12dc78_ec9cb6b4e1d843588bb899012c796456.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fb5067_24a8118810f04c439fc18f442373830a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7057/8070/files/how_to_make_a_call_flooder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/44019796134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6593/4759/files/97084113919.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_off00005ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF5 5840 bytes
SHA-256: 15e2a8ea7859e3750cfe5adef798d30b82cbbab8984749942cc54c20fc6e5ad7
font_01_sfnt_off00007245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7245 10248 bytes
SHA-256: cc0a9e3eb21b606de335609e9d743915f744ab64b9a930e5b9366dc4ee2aff97

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