Malicious PDF — malware analysis report

Static analysis result for SHA-256 162053f382bc5fca…

MALICIOUS

PDF

42.6 KB Created: 2020-08-11 06:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9679033b72f382006eb8df9928edd65 SHA-1: 8f57e40183583a9a3ba4d6d899a34bd83744bcf8 SHA-256: 162053f382bc5fcaa23b46c7718da8fc0f412d37b68f2e704a297a0082db41d1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though obfuscated, contains the primary malicious URL. The ML classifier also strongly flagged this PDF as malicious, suggesting it is designed to redirect users to a phishing or malware distribution site.

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.ru/wb?keyword=queremos%20que%20seas%20rico%20pdf%20completo In PDF document text
    • http://xevomeveg.funcde.com/uploads/1/3/1/3/131379246/584bc1.pdfIn PDF document text
    • http://files.artarmonphysiotherapy.com.au/uploads/1/3/2/7/132740694/nomojiwixop.pdfIn PDF document text
    • http://files.dogsbestfriendcr.com/uploads/1/3/0/7/130738708/7878e73e14091.pdfIn PDF document text
    • http://files.professionalcapitalpartners.com/uploads/1/3/1/4/131438766/4121815.pdfIn PDF document text
    • http://files.centralmississippirobotics.org/uploads/1/3/1/3/131398085/fomegiwufamatirebuzi.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/1/0430/1769/9477/files/pasudarunetilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/6067/7019/files/carmilla_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/how_to_read_tenor_clef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/73518525738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8831/3510/files/usps_ps_form_6401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5478/2869/files/6803893923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/oracle_identity_manager_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/tudebezubewojulitemiweti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/10063349078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/pomopadeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/gubuwopidarabutere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/5169389210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000647b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 5488 bytes
SHA-256: af93e264395370b10418b862d016fd9ebb0a2dd3b830f94d8d017ba54713d7bd
font_01_sfnt_off0000770d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770D 11296 bytes
SHA-256: ef287709803036810a2a780a0776c499be6eacbffec54042878889e50ce2277b

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