Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88cacfe29080956…

MALICIOUS

PDF

44.0 KB Created: 2020-08-01 21:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0ffa09aa390552417d3f995edb98b8df SHA-1: d9782a4fbd5549c139ddc7a0fb5ca2d336154467 SHA-256: f88cacfe29080956e65e77fc040836ec44ecfeecfbe6e11e8d7d0c9ba2ed73c0
194 Risk Score

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.ru/pify?keyword=n+game+2+hacked In PDF document text
    • http://files.hoa14.com/uploads/1/3/0/9/130969080/vexurelak_kokaganurapiv.pdfIn PDF document text
    • http://files.owencantrell.com/uploads/1/3/0/9/130969656/5058201.pdfIn PDF document text
    • http://files.hooves2pawsllc.com/uploads/1/3/0/7/130740130/vijin.pdfIn PDF document text
    • http://files.lake-of-dreams-campground.com/uploads/1/3/0/7/130775921/3347443.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/6667099382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/lumekitinosajofobofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/jofarevabunudafode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/printing_multiple_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/sanili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0658/1147/files/lodukajukutumig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8965/5960/files/xalagut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/68312096877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8574/1726/files/dental_caries_risk_assessment_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0291/9074/files/73284276065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/99823577994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/80369936896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/the_quantum_and_the_lotus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2589/0469/files/73917835936.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.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8D 5212 bytes
SHA-256: d40e588b9b6dc38c40b353bd9a81e0f77ce29da4438e13c306b8978dfa1e8466
font_01_sfnt_off00007027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7027 5960 bytes
SHA-256: 2f61cd2718cb4ba10821037013e9ff4addcc2110d9017221b14240b10444954b
font_02_sfnt_off00007f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F73 10724 bytes
SHA-256: b9d8a76a5026569c0ffe35945e3e3a9160762808e7725ab5207b91e15d08785f

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