Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bb67ad13b5c0cc…

MALICIOUS

PDF

50.8 KB Created: 2020-11-01 01:47:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1e5806bcc38d5b111406d0a82aca81c2 SHA-1: 4da8b9a9cfea460fd03c6b4bb94704099f9012ed SHA-256: 62bb67ad13b5c0cc1be9fae471991bd082e9558a9754949468ff03a20bf499c0
202 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised with game-related keywords. The document body and heuristics indicate a lure for users to click this link, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/123?keyword=realm+defense+best+heroes+for+campaign In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_5f93752df1163.pdfIn PDF document text
    • https://kilejotiwig.weebly.com/uploads/1/3/1/4/131406519/1841280.pdfIn PDF document text
    • https://buritovetozew.weebly.com/uploads/1/3/4/4/134486370/zoduxifuterufif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f86f491a6777.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/fasanag/asylum_series_book_1.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/greater_noida_authority_building_bye_laws.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/49022196883.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/complete_pet_for_schools_vk.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/jixog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7466df5c-0cfc-45c2-95e3-171df6965ac7/house_of_knowledge_neverwinter.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/attestation_d_employeur_web_destine__ple_emploi.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6504 3012 bytes
SHA-256: a399fe96af801c2052f662cdbde4f42b4a683414ee7bc8e1620d29cb9b520efd
font_01_sfnt_off00006fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 5716 bytes
SHA-256: b8adf895d23a2418249e2e58563db3219c09bb27f5324d255cc1aa9d5f9cc0b2
font_02_sfnt_off0000830e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830E 7216 bytes
SHA-256: b47412f4e9d13c50e2ff36faa18948201a13440a17a9c6a5fad0acc66c2aa152
font_03_sfnt_off000096bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96BD 11180 bytes
SHA-256: d6a6f5be886c82e55ac6941d8528deedd9a83bc2b0fa270c85c39fff5c8103ee

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