Malicious PDF — malware analysis report

Static analysis result for SHA-256 484be81ef3f8b134…

MALICIOUS

PDF

44.7 KB Created: 2020-08-15 03:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c284fb6620d20034fdc6206c4c49d089 SHA-1: 67b47b973b2972d5a05dc44f264d632060a49a41 SHA-256: 484be81ef3f8b134ad46b0909db02c84e5671456a0f67cc2097e211f80d5129b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical redirector link to 'https://ttraff.cc/pify?keyword=happier+easy+piano+sheet+music+free'. This indicates a phishing or scam attempt disguised as free piano sheet music. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=happier+easy+piano+sheet+music+free In PDF document text
    • http://files.pawsitivedogtraining.org/uploads/1/3/2/3/132302733/jusedafimapapakinuj.pdfIn PDF document text
    • http://tabuzas.donthirejerks.com/uploads/1/3/0/7/130776167/kapof-duvuvu-nilobodisuvut-dovixopogel.pdfIn PDF document text
    • http://pibik.olivetbiblechurch.org/uploads/1/3/2/6/132682076/879572.pdfIn PDF document text
    • http://files.slpechowan.com/uploads/1/3/2/6/132696030/2f182a0fb2069b.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/1/0436/3033/0019/files/67117691813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/75708898173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/wufuvemefimuvijixepazumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2140/1237/files/83041623279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7956/4448/files/pofinikilir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/moxamajumajuzixosonivuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1938/1399/files/linear_algebra_multiple_choice_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/define_academic_achievement.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_off00006870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6870 5284 bytes
SHA-256: acb5515ba1a3ae39dd8aa2757ab1249c8c82bd90b01c8dd570cf3a9c211df9c0
font_01_sfnt_off00007a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A40 14324 bytes
SHA-256: f1e9a38a7508d03b97a1ab2d97217eff2617b7e6951963e9676f5b7f228457e7

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