Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b45276695f57beb…

MALICIOUS

PDF

37.3 KB Created: 2020-09-14 00:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bdab037c5fae9803b59200685f8971d SHA-1: 3958850173db1fb12914cdea328a133f615983a4 SHA-256: 7b45276695f57beb59ef79ca230f4ec9b236eac6b5a6811927f0825060fb22de
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating they lead to known malicious redirector infrastructure. The document body and embedded link structures suggest an attempt to disguise these links as legitimate content, likely for a phishing or malware distribution campaign. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.me/wix?keyword=aasl+standards+for+school+librarians In PDF document text
    • http://files.pgeastteachandlearn.com/uploads/1/3/0/7/130738714/d7d1bd294f8.pdfIn PDF document text
    • http://files.lakelifefashions.com/uploads/1/3/1/6/131606875/231eb3537adda.pdfIn PDF document text
    • http://files.ninaquilts.com/uploads/1/3/1/1/131164456/e5d0b.pdfIn PDF document text
    • http://files.shutterpandemonium.com/uploads/1/3/2/6/132695301/xawulerenorepoj_zefufimesi_gigimi_xudurafalu.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/1/0437/4750/8385/files/23540854204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/android_mobile_root_software_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/22794591867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/69366446188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0948/6498/files/solving_exponential_and_logarithms_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jobevemavesofidubuxiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/89634066202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/9318207832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/kuzufexatuwaguwed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/28708936530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3717/7494/files/android_watch_with_sim_and_camera.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_off00005527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5527 5236 bytes
SHA-256: bf04b5ac541675dd49daf5f183649783cc4c2797a214427ee3e56b4814eef61a
font_01_sfnt_off000066ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EF 9832 bytes
SHA-256: 61e3ea6e8eca675c0d0d0f5b1a078e2447b125ba19bcd6fd49532859a3dce054

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