Malicious PDF — malware analysis report

Static analysis result for SHA-256 16944368a5adcd15…

MALICIOUS

PDF

37.5 KB Created: 2020-08-19 15:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f7838aba8bcf64b0f02c33e204d2b9f SHA-1: 0f9ed7bd15d59eb261d2dc724def47e54dc1cebd SHA-256: 16944368a5adcd151d7699d643c437fb723337ee7d9c9c6b7a4220eec5d3c013
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to a redirector infrastructure, identified as malicious. The document body, though obfuscated, contains text suggesting it is a lure for 'Aziza Mustafa Zadeh piano sheet music'. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm strategy. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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=aziza+mustafa+zadeh+piano+sheet+music In PDF document text
    • http://loloz.whatsoninhoniton.com/uploads/1/3/2/6/132695832/cd24a98b53e2.pdfIn PDF document text
    • http://fegori.hboydphoto.com/uploads/1/3/1/6/131607163/368481.pdfIn PDF document text
    • http://kerari.humphreysfreelancemedia.com/uploads/1/3/1/1/131164250/d8c1eb22.pdfIn PDF document text
    • http://vodenol.musicbyspecialarrangement.com/uploads/1/3/1/3/131379246/7102437.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/46194816499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3241/1298/files/apocalipticos_e_integrados_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3794/0133/files/xajavexejunelenogakulof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1921/4758/files/roblox_script_viewer_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66179678401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4908/6102/files/actuarial_control_cycle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/83035552690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3387/files/lab_report_microscope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/apsc_exam_question_paper_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/adding_to_20_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7409/3217/files/tefilakob.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48A9 5188 bytes
SHA-256: f7b88da8c7205c040c4136be98d81f77c0bb64ebce2b42677b93a1b5774dff0b
font_01_sfnt_off00005a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A33 9608 bytes
SHA-256: 248aff82a84193a9f416dbb94cec4fd23bd759f0d5d3ad2459b79daa4077aa48
font_02_sfnt_off00007b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1C 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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