Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8bd0330711e79b0…

MALICIOUS

PDF

44.3 KB Created: 2020-08-25 04:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c06f7947b9b336a6b1808ae48a92a81 SHA-1: 593b8639509014f9574238eb1e150a703d420022 SHA-256: b8bd0330711e79b05f20d1bc334ca5855b42f9e78ed181dd574b88467fe9e47c
194 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a malicious domain, likely as part of a phishing or scam campaign. The document body text and embedded URLs suggest a lure related to school uniforms, which then redirects to a link farm. The presence of numerous Shopify-hosted PDF links, alongside a critical heuristic firing for a malicious redirector, indicates a coordinated effort to distribute malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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=st+bedes+lytham+school+uniform In PDF document text
    • http://files.foodandbars.com/uploads/1/3/1/3/131379552/06899eb.pdfIn PDF document text
    • http://sofedegub.shannondellmodelrailroad.org/uploads/1/3/1/4/131406710/8ab46dbe0f4.pdfIn PDF document text
    • http://files.adamsfarmliving.com/uploads/1/3/1/4/131407284/zukelo_forotosumali_meranez_jozado.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/1/0436/0945/6803/files/zen_budismo_e_psicanlise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/nier_automata_strategy_guide_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/8497978118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/77797185611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/relationship_between_honeyguide_and_badger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/karthika_puranam_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4935/1328/files/movaxilisiferuzitibazuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6641/6549/files/vuzinonojodewojugowiramog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/effect_of_stress_on_job_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/12558117438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7223/3376/files/polijazadovukigezo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF0 5488 bytes
SHA-256: 5f20ce9150141e7fde2f1f9f13ab1038dc9e68ab8f3b817a4f8759be040f2310
font_01_sfnt_off00006f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6B 12112 bytes
SHA-256: 49df7641e77a0e1252a2edfc7b84b01565abef72da3cc1cfb183772297de9f50
font_02_sfnt_off00009652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9652 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f