Malicious PDF — malware analysis report

Static analysis result for SHA-256 158d35920d1e8209…

MALICIOUS

PDF

39.5 KB Created: 2020-08-19 03:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfa3f5aa750bb4295667735ea3d3154c SHA-1: bf62530716a815c45f63bb0adce73b0173ad74f2 SHA-256: 158d35920d1e82094302eabfbc044b1921f294298e682404166c6315af3888b3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector at `https://ttraff.com/pify?keyword=ophelia+the+lumineers+piano+sheet`. The document body, though heavily obfuscated, contains text suggesting it is a lure for piano sheet music. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious infrastructure, likely for phishing or malware delivery.

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=ophelia+the+lumineers+piano+sheet In PDF document text
    • http://files.theandalusiabookman.com/uploads/1/3/1/4/131437532/jorelipo-fowumopusef-pilewil-tibebev.pdfIn PDF document text
    • http://files.mccrearykennel.com/uploads/1/3/1/6/131607163/xizam.pdfIn PDF document text
    • http://files.okuharafoods.com/uploads/1/3/1/3/131384432/petukore.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/1/0431/4189/0209/files/apically_repositioned_flap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/fisewofuramezavatozabakop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/appetites_2015_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/32844241812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/purebdcraft_1._6._4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9481/7435/files/63347114342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/85644886679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2987/3318/files/93938369422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/example_of_application_letter_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6271/2727/files/facebook_post_image_size_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/fegudebiriviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1609/2828/files/liver_cirrhosis_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9820/9446/files/bosch_logixx_7_washing_machine_manual.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 4

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_off00004fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBA 5084 bytes
SHA-256: 9d7553d00ec0ba91e8153bec4967ff7bead8c0decf5203234706bd9d00976edf
font_01_sfnt_off000060d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D8 14764 bytes
SHA-256: 34820df892e0b2bd3ba3f3b1c19248fbe7abb26f20464ffe44416f36b6a0ac7b

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