Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ce6dc9c0404a79…

MALICIOUS

PDF

58.1 KB Created: 2020-08-12 14:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac76097980fb466751a5fb777bc4bcbc SHA-1: 93b6271dc0d134351290d49e7120d6be60973e17 SHA-256: 23ce6dc9c0404a79510f0f87f951916fa2c810607a0caaed065950f37a44f252
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as a manual for an Omron M7 device. This is further supported by heuristics indicating a malicious redirector link and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains the target URL and other embedded URLs, suggesting a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=omron%20m7%20hem-780-e%20manual In PDF document text
    • http://logon.newhorizonperuvians.com/uploads/1/3/1/3/131380600/sebanomusirisaj_pememisejewara_bodavunewato_bokubodupasis.pdfIn PDF document text
    • http://files.sexywaterfishing.com/uploads/1/3/1/6/131606755/naxexesuzumem.pdfIn PDF document text
    • http://files.beulahlandbiblecamp.org/uploads/1/3/0/7/130739809/48c4f.pdfIn PDF document text
    • http://files.gailshortwrites.com/uploads/1/3/0/9/130969984/8757968.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7970/3451/files/kavelimupasabotib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0034/7299/files/acuerdo_de_confidencialidad_nda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6638/3770/files/ridukodurexogutosazuwuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3827/6760/files/23350378542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7807/4020/files/72673999214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3479/files/65757240406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/d_d_5th_edition_character_sheet_editable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/24791892461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1645/2258/files/sigabovovelalirolagujuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/electro_pneumatic_actuator.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FD 3336 bytes
SHA-256: 03eeec7ce871280bd497c680b65b46004a34c83d1b91692ccdfbd074e34ad7e1
font_01_sfnt_off000084dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DC 5220 bytes
SHA-256: 8a2cf9143f3c684dff16d529d6a8a9b0989c322686112c625a55c7dfa7b5da66
font_02_sfnt_off00009672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9672 15496 bytes
SHA-256: 487c6e41f8a65b061d47a9fb688c48a66c325ac10c7b938bfbc35c81a36a67e7
font_03_sfnt_off0000c654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC654 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2