Malicious PDF — malware analysis report

Static analysis result for SHA-256 117fbe6022ec928f…

MALICIOUS

PDF

52.2 KB Created: 2020-08-05 23:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64e8182be8f4355f956df39239bc9c19 SHA-1: e3c7f765b5feaaf85d0810e9713c016d418d28f5 SHA-256: 117fbe6022ec928fe7d9cca7f30a13791a2dba816721cf1edd546e5c281af0e6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=biblia+de+estudio+cristiana+evangelica+pdf, suggesting a lure to a malicious site disguised as a Bible study resource. The presence of numerous other PDF links further indicates a link farm or SEO manipulation tactic.

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.ru/pify?keyword=biblia+de+estudio+cristiana+evangelica+pdf
    • http://files.neilmckenzieyouthfishingcontest.org/uploads/1/3/1/6/131606127/1963708.pdf
    • http://files.ps173q.org/uploads/1/3/0/7/130739704/nedujodapolufukupugi.pdf
    • http://files.theworkingconnectionllc.net/uploads/1/3/2/6/132682904/3a213fd38be6fc.pdf
    • http://files.alohavolleyball.com/uploads/1/3/2/8/132815298/9aba7f.pdf
    • http://files.lidgettandbeyond.org/uploads/1/3/2/3/132303093/vugibif.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0448/6122/7169/files/essential_clinical_anesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0439/8075/1006/files/capitano_ultimo_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/tuwukasezuzorazujomonabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5754/files/fexukalon.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/devizexonezivurox.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8646/files/16856973620.pdf
    • https://cdn.shopify.com/s/files/1/0431/3979/3050/files/wisibibawojapowibavotuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/59727172304.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/13854242853.pdf
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/jakepegexigumadowin.pdf
    • https://cdn.shopify.com/s/files/1/0432/5805/2763/files/wow_argent_crusade.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_off00007b80.bin
5e7d739d1ba592298675c42f3bc6f5bb7a1bdc86263d34234dc7ff1c2ad25f4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B80 5456 bytes
font_01_sfnt_off00008e14.bin
b440d1511e507e03bbb004c5eae2e6b0b31e6b81003e8f831477595f744402ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E14 11596 bytes
font_02_sfnt_off0000b3ca.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3CA 4324 bytes

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