Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0525506d5fbce7…

MALICIOUS

PDF

41.3 KB Created: 2020-08-09 06:23:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 218206ed655ed1ef8ceb6746969f8ba4 SHA-1: c7d0b86f10cd9ca3f974498cb7c06199857765a9 SHA-256: be0525506d5fbce7b571b1464a41b5a435e713de807a34551e241f65b199079c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded URLs that redirect to a malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'diaphragm breathing exercises for singing pdf' and the malicious URL, suggesting a lure. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the redirector URL used in the lure.

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/pify?keyword=diaphragm+breathing+exercises+for+singing+pdf In PDF document text
    • http://diwad.foundationforadrugfreeworldnewyorkchapter.org/uploads/1/3/0/8/130874493/gosejuwa_zamapanolulujub_xowulujozobis_vagizituf.pdfIn PDF document text
    • http://files.rram.ca/uploads/1/3/1/6/131606861/gebojofonu-kotifirasareren.pdfIn PDF document text
    • http://files.kendrathomastravaille.com/uploads/1/3/0/8/130813781/vowebolulixemuzug.pdfIn PDF document text
    • http://files.bloomkc.org/uploads/1/3/2/6/132681587/f5c30b2eb60a.pdfIn PDF document text
    • http://geriv.donnacronk.com/uploads/1/3/2/6/132682076/nasogoketuv_kipemosiw_tazofazivu_jidegolitib.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/1/0433/9433/4869/files/wosani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/42881263903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/60946823825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2234/3577/files/33133548548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2306/4488/files/28173083808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/zoology_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/67143321154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3059/2160/files/21538042969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/kixutam.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 6

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_off000061fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FE 5744 bytes
SHA-256: ec53e1e3c66fea50931494a0ba483aeb50e73eefb0fed576a5f35ec6cd365bee
font_01_sfnt_off00007562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7562 10228 bytes
SHA-256: 4fec5abe83cec41d6c5009c9632109e45906cb2622870c0a5565810ee52193da

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