Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed811a4777ec56ba…

MALICIOUS

PDF

37.9 KB Created: 2020-08-17 06:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9136aca073332ecf0b89ea4be1d79993 SHA-1: d9857a251fff93fa1eb54aae786f27c017b15ef1 SHA-256: ed811a4777ec56baa5c0b77ed4af129697c0cd1c09e7d8c015f245910cd8c886
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the text 'Irish flute duets sheet music' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of numerous links indicates a link farm SEO tactic to improve search engine ranking for malicious content.

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=irish+flute+duets+sheet+music In PDF document text
    • http://files.catholicplacemats.com.au/uploads/1/3/0/7/130776141/f465070.pdfIn PDF document text
    • http://files.levental-lab.com/uploads/1/3/2/7/132710628/af69c6f7cd.pdfIn PDF document text
    • http://files.aldoprado.com/uploads/1/3/1/0/131071240/nenewaranapumiw.pdfIn PDF document text
    • http://files.themoveablechurch.org/uploads/1/3/0/8/130874128/9175303.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/1/0434/1124/3164/files/newborn_baby_crying_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/95838764618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97253363073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/ritemebidimamonopep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/bedowewokufedunuvok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/70914876807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/classement_coupe_du_monde_rugby_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/68779364142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4682/files/mipulukefigesoropimorixal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/arduino_beginner_projects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/webster_s_dictionary_of_synonyms_and_antonyms.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 8

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_off00005586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5586 4988 bytes
SHA-256: 6318632df25598a32d226d26496470748c67c09c1c226043fd5e53dc5d04e8f7
font_01_sfnt_off0000664a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664A 10680 bytes
SHA-256: c4d7ffac6199edc845a0d72cc2d9902178b609f46fee6c8ee52dba4ac2ba5a9b

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