Malicious PDF — malware analysis report

Static analysis result for SHA-256 283471bcaa9e0da8…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 11:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd9fd0fd3ba4f68e0ea21608bdb47a5f SHA-1: 2207de5e5d4e78b8557be088b116c22a7a3d1216 SHA-256: 283471bcaa9e0da8c52c90c65573b841c9dd89242efe687c5884368b1168358f
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, specifically a URL designed to lure users with the promise of 'gluten free bread recipes pdf'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this redirection to a known malicious domain. The ML classifier also strongly indicates maliciousness. The document body, though partially corrupted, contains the lure text and the malicious URL.

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.com/pify?keyword=gluten+free+bread+recipes+pdf In PDF document text
    • http://files.danceandcircusarts.com/uploads/1/3/2/6/132681976/lefunu.pdfIn PDF document text
    • http://files.greendragonkungfu.ca/uploads/1/3/1/4/131409037/femes-bemoxabu-kukin-kalupeketodud.pdfIn PDF document text
    • http://files.jenniferargo.com/uploads/1/3/0/7/130775484/lubumisofejifej.pdfIn PDF document text
    • http://rafob.desertglowspraytanning.com/uploads/1/3/0/7/130740596/buwuvobuge.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/1/0430/3591/8489/files/nezega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/16857365202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2324/4191/files/kodezoxilatogumudunisok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/tojomakubelaref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3674/files/88037430142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/tupiwukewasagilole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/38435366921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/71787570591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/somemasofikubefebebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3950/7100/files/27324848298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/ruby_file_copy.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_off00006d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D09 5320 bytes
SHA-256: 6cae00e308a0b5d6acb5fe01a7c23639910241221d8fec54177a97e4bbfc5e48
font_01_sfnt_off00007f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2B 10420 bytes
SHA-256: c76c1cc93868f067ac019a928240379802502cf9189aa85d09cce9ea74f7e0d8

Open this report in the interactive analyzer, or submit your own file for analysis.