Malicious PDF — malware analysis report

Static analysis result for SHA-256 31495dbd6c21070b…

MALICIOUS

PDF

38.8 KB Created: 2020-08-19 00:28:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f240da14db49b6b9dddfa6dd3e92f901 SHA-1: bcbf60be8f63af57df502eee066f64e28a224fa0 SHA-256: 31495dbd6c21070b5bc3599034d06e4bc04b887f88631fbc3797991e4716c6c9
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a known malicious redirector. The document body, though partially corrupted, includes text related to sheet music and the malicious URL, suggesting a lure to entice users to click the link. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or scam attempt. No scripts were extracted from this sample.

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.com/pify?keyword=franz+liszt+liebestraum+sheet+music In PDF document text
    • http://rivuwofop.amandaglathlin.com/uploads/1/3/1/3/131380755/5108185.pdfIn PDF document text
    • http://files.drtadeusik.com/uploads/1/3/1/1/131163666/7340044.pdfIn PDF document text
    • http://velowas.pb-pproductions.com/uploads/1/3/0/8/130814328/sizoxotivuremironi.pdfIn PDF document text
    • http://pewudon.pajugubrauksana.com/uploads/1/3/2/6/132695569/f9b2e13a103c.pdfIn PDF document text
    • http://files.pokeplug.net/uploads/1/3/0/7/130775219/e6dc0.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/1/0431/3301/0082/files/us_address_list_with_zip_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/57704318960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/ministry_of_information_and_broadcasting_recruitment_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/autodesk_maya_notes_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0722/1661/files/python_format_float.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1061/2635/files/kawunud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0364/7912/files/newspaper_layout_template_indesign.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/menuzuvaxore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4843/files/i_am_discourses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/binebaxinilovojosaseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7367/0037/files/8479143818.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 5

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_off00004dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DBB 5184 bytes
SHA-256: 0b609124bab131d68285ccc319b6c7c21236938febca143d2ae0b3f17e079f10
font_01_sfnt_off00005f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F30 15364 bytes
SHA-256: e11b346c36562c6583c97058d6b0f356caad472e4f108ee32a8b1267f74d3822

Open this report in the interactive analyzer, or submit your own file for analysis.