Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e6e1200fe113271…

MALICIOUS

PDF

52.8 KB Created: 2020-10-02 22:07:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9aff1d9e614679487aada10ed786d30d SHA-1: e62c8c71e8a562dbdf1270e5980f72b2b7831879 SHA-256: 4e6e1200fe1132718adccd04377c0716ef647073d78c4e5e4a15a7d552343758
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/strik?keyword=an+occurrence+at+owl+creek+bridge+co In PDF document text
    • https://site-1036995.mozfiles.com/files/1036995/50486027159.pdfIn PDF document text
    • https://site-1036880.mozfiles.com/files/1036880/bapisojigajobofer.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/vofataxasadizov.pdfIn PDF document text
    • https://site-1037188.mozfiles.com/files/1037188/raxolodefemometejarab.pdfIn PDF document text
    • http://files.joselinehardrick.com/uploads/1/3/1/6/131606284/mukijapazudujuw-peluzi-sokorudul.pdfIn PDF document text
    • http://files.mastinsiteservices.com/uploads/1/3/2/6/132682640/divuw_radisoveb_jilovosurizo.pdfIn PDF document text
    • http://files.windhamchurch.org/uploads/1/3/0/8/130873983/rimufemuj.pdfIn PDF document text
    • http://jizagil.banahawhealsspa.com/uploads/1/3/1/6/131606127/zivirigadom.pdfIn PDF document text
    • http://luwenir.mindstatepsychology.com.au/uploads/1/3/0/9/130969204/zuxefolakenaxojeri.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/1/0431/7144/6939/files/drastic_2.5_0.3_no_root_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/how_to_start_a_broiler_poultry_farm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6272/9125/files/definicion_normas_sociales.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000853a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853A 5096 bytes
SHA-256: 16fbc07c836d1d2209001e2d3bc45869d30a6c9279b260880387cde2a5b1a1da
font_01_sfnt_off000096aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AA 9804 bytes
SHA-256: 0b735a17418ac5dce31ddc1ef4a6308631ba92637905e7025201ccdb1c7ab3b1
font_02_sfnt_off0000b7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7FD 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f