Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5739fa5744bd99…

MALICIOUS

PDF

42.8 KB Created: 2020-08-24 14:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 570b0829df36513572ae6aa187691dbc SHA-1: a615077c582a368c4c698ba0fe7a71374f803dbb SHA-256: ed5739fa5744bd99040957ebfeb5af9d69a01d14d459bc111d108b94e4c0d06f
162 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text referencing 'Blackboard launcher mac' and includes the malicious URL. This suggests a phishing or social engineering attempt to redirect the user to malicious infrastructure.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=blackboard+launcher++mac In PDF document text
    • http://files.annascafebar.co.uk/uploads/1/3/1/4/131406947/dametopujanoparoko.pdfIn PDF document text
    • http://files.dsmtoolworks.com/uploads/1/3/1/8/131872070/ac808a33c2f.pdfIn PDF document text
    • http://rutiru.drtmobilevetcare.com/uploads/1/3/0/9/130969953/vesiwajefif.pdfIn PDF document text
    • http://files.pythonregius.com/uploads/1/3/1/3/131398144/16ef7a73c.pdfIn PDF document text
    • http://files.downcenterlinedressage.com/uploads/1/3/1/4/131453592/jelozobemiko.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/1/0428/4035/9068/files/pawejatogiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6059/9701/files/sozis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5076/0357/files/anomalias_congenitas_del_aparato_reproductor_femenino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/causes_of_ischemic_heart_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1329/8581/files/bozosibaxaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0185/7436/files/aimersoft_dvd_creator_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4674/7805/files/lab_safety_worksheet_answers_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/86545371720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/pedamagigakipevitak.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_off00006b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2F 5252 bytes
SHA-256: b293ec90aaeca845247004412227b363cdc46197f26c0a60a33b3fe3c323187f
font_01_sfnt_off00007ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 9880 bytes
SHA-256: 3413dba5dae094a67846ab46dc68b49e8b203b25442f4a617734b047439d8ac2

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