Malicious PDF — malware analysis report

Static analysis result for SHA-256 1532043c6b9707e2…

MALICIOUS

PDF

37.3 KB Created: 2020-08-18 17:02:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15ef2164f7fd4c8e3684ffd2d96c2ae4 SHA-1: bae6527b50e646b5fa1e905df517d0702fdc7be3 SHA-256: 1532043c6b9707e2edac766f809262c3ea1c58194fc639a4ed47aa4cc38181d9
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a prominent redirector URL, identified as malicious. The heuristic findings indicate a link farm designed to direct users to potentially harmful content. The document body, though partially obfuscated, contains the redirector URL and appears to be a lure for a grading sheet, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=composite+grading+sheet+deped In PDF document text
    • http://pagiw.astronomywa.net.au/uploads/1/3/1/0/131070374/5ca055a.pdfIn PDF document text
    • http://files.gamesforspecialneeds.com/uploads/1/3/2/6/132696111/ginuwetiwivixikug.pdfIn PDF document text
    • http://files.kimberlylsimpson.net/uploads/1/3/0/7/130776599/70ef7ac2b86.pdfIn PDF document text
    • http://files.lidetectingresource.com/uploads/1/3/1/8/131856516/dujimezujesitipen.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/1/0431/4795/2292/files/24221737786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/41841231275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6536/6933/files/essentials_of_polymer_science_and_engineering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/100_books_to_read_before_college.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/fashion_design_business_plan_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/bestwap_song_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/55039680118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/kubota_t1400_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 3

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_off0000555d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x555D 5244 bytes
SHA-256: 5e49fc50b4d7eb966927ce0ee47094c6fb84f9356d054235fbc486c19d1fdf68
font_01_sfnt_off00006700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 9688 bytes
SHA-256: 96ccb0172b18e544e3946666fb2d7d715d7a3749ed8d81cceff21b65b86528bb

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