Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e7abd3ea4766c0…

MALICIOUS

PDF

41.6 KB Created: 2020-08-08 10:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cbb9b04b569fb9a330b2cb79627e8d35 SHA-1: 9819afb3b47f116e01796fa0ac30cb8c1ed0a56a SHA-256: 58e7abd3ea4766c0400a256317be83bfaab4c822d761ed5b96df8adc8e4316ac
194 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to a redirector service, suggesting a link farm or phishing lure. The document body text, though partially corrupted, includes a URL that is also present in the heuristics, indicating a malicious redirector. The presence of numerous PDF links and a redirector points towards an attempt to distribute or lead users to malicious content, likely disguised as legitimate downloads.

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=appsc+aee+previous+papers+for+civil+engineering+pdf In PDF document text
    • http://files.basementstopleak.com/uploads/1/3/1/1/131163854/nufogizibuxamage.pdfIn PDF document text
    • http://files.northshack.com/uploads/1/3/0/8/130813524/judunozi.pdfIn PDF document text
    • http://files.royaljudaica.com/uploads/1/3/1/8/131856039/dededaxiped.pdfIn PDF document text
    • http://files.theconferenceofbirds.com/uploads/1/3/0/7/130740191/3794661.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/1/0432/0670/5311/files/biologi_sma_kelas_xii_kurikulum_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/59718179798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/ccna_routing_and_switching_complete_study_guide_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/regetemalesipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/92240175369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/nuvinamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/91128025827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/67527215703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/najuridoxetatonemul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8861/7378/files/sagofuwiterefufogosalabig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3164/8663/files/safe_driving_points_balance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/32560515872.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 3

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_off0000634c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634C 5372 bytes
SHA-256: 340222ad2a2a61a2ff30e77cbfa5eadce9997f6b77bea87df3f85ebda5d35ba6
font_01_sfnt_off000075ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AC 10428 bytes
SHA-256: cce7d19cd48dae8d3422390925dc80ce06a79719356d70487d445d8e2f188ac8

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