Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db9310504b2af94…

MALICIOUS

PDF

46.8 KB Created: 2020-08-12 15:58:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19d3211e26defe0ce84ce7e7cc1775a2 SHA-1: b9bad4edf086c1fe812a1a9a229417750f170dcc SHA-256: 6db9310504b2af9457d7770e406561ac4eab3058823c651a0c694a003f4cb7d3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service designed to obscure the final destination. The primary redirector URL is https://ttraff.com/pify?keyword=practical+english+usage+4th+edition+pdf+free, which is flagged as malicious. The document body and embedded links suggest a tactic of creating a link farm, potentially to manipulate search engine results or to lure users into clicking on malicious URLs disguised as download links for various documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=practical+english+usage+4th+edition+pdf+free
    • http://files.bishopkemperschool.org/uploads/1/3/1/4/131452904/mebelofoxamox.pdf
    • http://files.oradesignsohio.com/uploads/1/3/1/3/131380005/bebanekowiloza.pdf
    • http://repewa.hypefit.co.uk/uploads/1/3/1/4/131453060/851892.pdf
    • http://files.daeodain.com/uploads/1/3/1/4/131407194/252507.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/56716270456.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/roblox_paid_script_executor.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/11_science_biology_book_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/85051122613.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/artocarpus_integer.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/finakonositupekonif.pdf
    • https://cdn.shopify.com/s/files/1/0434/1625/6662/files/sitebiwedikizakutu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9092/0099/files/13541091517.pdf
    • https://cdn.shopify.com/s/files/1/0438/5013/7760/files/como_traducir_de_aleman_a_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/19097058443.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/rosigurusiwegarudaxoxag.pdf
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/numibin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0431/3225/6407/files/offering_box_sekiro.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000699d.bin
b6fccd6ea8cb788cf69d74ba4bc383eb12e5b57a45abc449d0676a0c405f0e41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699D 5388 bytes
font_01_sfnt_off00007be4.bin
9a0b8af79027f020ca630ee49f5bec353439bd5f982ade762cb60028771bb18b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE4 10504 bytes
font_02_sfnt_off00009f8f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8F 4324 bytes

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