Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d37f00c34fec50b…

MALICIOUS

PDF

42.8 KB Created: 2020-08-06 18:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 773cd458878614d9c618ef79a8a62979 SHA-1: 936f82e1b327cb352841ded9dbe70f0eb10d5d70 SHA-256: 3d37f00c34fec50b33f0745f86cc05574ed446837fa4a8918bc07582ad323e08
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify'. The document body, though heavily obfuscated, contains the same URL and a reference to 'java tutorial for beginners bangla pdf', suggesting a lure. The PDF also exhibits a link farm behavior, with numerous links pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious content. No scripts were extracted from this sample.

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=java+tutorial+for+beginners+bangla+pdf In PDF document text
    • http://files.stephtalksfood.com/uploads/1/3/1/4/131438036/webadagogelabe.pdfIn PDF document text
    • http://files.sjamediaarts.com/uploads/1/3/1/4/131409761/a13a3a4fcec230.pdfIn PDF document text
    • http://files.shefaholistic.com/uploads/1/3/1/1/131163902/gimonimewog-napabef-madupux.pdfIn PDF document text
    • http://files.blackgoldwinterguard.com/uploads/1/3/1/3/131398406/monaduloxesejaw-rilupojakotun-masereg.pdfIn PDF document text
    • http://files.ajcollectablecards.com.au/uploads/1/3/0/7/130738531/625421.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/1/0437/3102/6071/files/sezopolaror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/etw_civil_war_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/bistro_romain_carte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/free_caterpillar_service_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/74995187635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/31519373572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/61202540179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/lidepasikepizewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2876/7143/files/sekafaweka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8783/6822/files/celebrate_jesus_celebrate_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/68756152358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/acopio_de_informacion_metodologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2194/3463/files/20288179063.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
🗂 Part of campaign: authorcharityayres.com 3 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A28 5280 bytes
SHA-256: 05401121348df87230d34f7d308eed57f67ed4b336c3318e5645776af8370ffd
font_01_sfnt_off00005c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C22 5424 bytes
SHA-256: 8ea2eb6562d57f819a38bedcde283f50d788b0f16031d799f5779690e84ec8ac
font_02_sfnt_off00006de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE7 9812 bytes
SHA-256: e961ebdafc283d537ee83c8d1d3c046c8f6644b4bf4a3c21bf8e2b5240a53d7b
font_03_sfnt_off00008f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F86 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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