Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd890cf4402bb7e…

MALICIOUS

PDF

33.5 KB Created: 2020-08-21 02:21:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f49da1ac15b31d0211477461a2ff344e SHA-1: 78f2b6256e4399cc26060ec59d479751e8cd8423 SHA-256: 3bd890cf4402bb7e69863d29ad9a868b9498469cb20cd7288bf38e1438be0d8f
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a link farm and a malicious redirector URL, suggesting it is designed to lead users to malicious content. Additionally, a callback phishing lure is present, indicating a social engineering attempt to solicit a phone call. The document body's content, 'Wallpaper hd for mobile love', is likely a lure to disguise the malicious intent. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.ru/pify?keyword=wallpaper+hd++for+mobile+love In PDF document text
    • http://files.maplegroveiowa.org/uploads/1/3/0/8/130813769/98a07aaf2cc0.pdfIn PDF document text
    • http://files.changinglyfemgmt.com/uploads/1/3/1/4/131437378/duxakawudenus.pdfIn PDF document text
    • http://files.hcnextdesign.com/uploads/1/3/2/6/132681617/5280936.pdfIn PDF document text
    • http://files.afripeace.org/uploads/1/3/2/7/132740343/7307267.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/1/0430/1137/5267/files/bawawovakerodisefin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/bucharest_city_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/69874347534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4029/3543/files/31524428887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1504/1187/files/corporate_bylaws_rumah_sakit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1911/7223/files/sophos_central_endpoint_protection_advanced_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2515/3698/files/ocean_avenue_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/android_navigation_with_bottomnavigationview.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 2

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_off00004618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4618 5316 bytes
SHA-256: bd995930380d570d33401a062923f56cc9bf0133affc90c2b30c5ed40cc8dc78
font_01_sfnt_off0000581c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581C 9844 bytes
SHA-256: 9303555f9dd5fb61ba43e1f49ea5195ee170e227b2e142549ff816c6e0572336

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